{"product_id":"seachem-tidal-35-hob-filter","title":"Seachem Tidal 35 HOB Filter – 130 GPH Aquarium Power Filter","description":"\u003cp\u003eThe Seachem Tidal 35 HOB Filter is a compact, customizable hang-on-back aquarium filter designed for freshwater and saltwater aquariums up to 35 gallons. It combines mechanical and biological filtration with a spacious media basket that can be customized with additional chemical or specialty filter media.\u003c\/p\u003e\n\u003cp\u003eWith a maximum flow rate of 130 gallons per hour, the Tidal 35 provides efficient water circulation for nano and small aquariums. Its adjustable output flow allows the filter to be adapted to community aquariums, planted tanks, betta setups, and systems containing fish that prefer gentler water movement.\u003c\/p\u003e\n\u003cp\u003eThe Tidal 35 includes a reusable mechanical foam pad and Seachem Matrix biological filter media. Additional media such as Purigen, activated carbon, phosphate remover, or fine filter floss may be added when the aquarium requires more specialized filtration.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Aquariums Up to 35 Gallons:\u003c\/strong\u003e Compact filtration for nano, small, and medium freshwater or marine systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e130 GPH Maximum Flow:\u003c\/strong\u003e Provides strong circulation with adjustable output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Priming Pump:\u003c\/strong\u003e Starts without manually filling the filter or establishing a siphon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Restart:\u003c\/strong\u003e Designed to restart after maintenance or a temporary power interruption\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-In Surface Skimmer:\u003c\/strong\u003e Draws water from the aquarium surface to help remove oily films\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubsurface Intake:\u003c\/strong\u003e Pulls water from below the surface for broader aquarium circulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Flow:\u003c\/strong\u003e Allows the return flow to be reduced for fish and plants that prefer gentler movement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Media Basket:\u003c\/strong\u003e Provides flexible space for mechanical, biological, and chemical filtration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance Alert:\u003c\/strong\u003e Signals when reduced media flow indicates that filter cleaning may be needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverflow Protection:\u003c\/strong\u003e Directs water back into the aquarium if the media becomes severely restricted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerating Return Flow:\u003c\/strong\u003e Encourages surface movement and gas exchange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater \u0026amp; Saltwater Use:\u003c\/strong\u003e Suitable for freshwater, planted, brackish, marine, and reef aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Seachem\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Tidal 35 Power Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Type:\u003c\/strong\u003e Hang-on-back aquarium power filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAquarium Rating:\u003c\/strong\u003e Up to 35 US gallons \/ 130 liters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Flow Rate:\u003c\/strong\u003e 130 US gallons per hour \/ 500 liters per hour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 6 watts on 120 V \/ 60 Hz models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Filter Volume:\u003c\/strong\u003e Approximately 0.2 US gallons \/ 0.7 liters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAquarium Type:\u003c\/strong\u003e Freshwater and saltwater\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Regulation:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Skimmer:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Priming:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance Alert:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFilter Dimensions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Length:\u003c\/strong\u003e Approximately 6 1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Width:\u003c\/strong\u003e Approximately 5 1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Height:\u003c\/strong\u003e Approximately 7 1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia Chamber Length:\u003c\/strong\u003e Approximately 5 3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia Chamber Width:\u003c\/strong\u003e Approximately 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia Chamber Height:\u003c\/strong\u003e Approximately 4 7\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired Wall Clearance:\u003c\/strong\u003e Approximately 2 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Tank Clearance:\u003c\/strong\u003e Approximately 1 3\/8 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMeasure the aquarium rim and the space behind the aquarium before purchase. Additional room may be needed to remove the filter basket and perform maintenance comfortably.\u003c\/p\u003e\n\u003ch3\u003eWhat Is Included?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSeachem Tidal 35 Power Filter\u003c\/li\u003e\n\u003cli\u003eReusable Tidal 35 foam filter\u003c\/li\u003e\n\u003cli\u003eSeachem Matrix biological filter media\u003c\/li\u003e\n\u003cli\u003eMedia basket\u003c\/li\u003e\n\u003cli\u003eReversible filter cover\u003c\/li\u003e\n\u003cli\u003eProduct documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional chemical and specialty media are sold separately unless specifically included by the retailer.\u003c\/p\u003e\n\u003ch3\u003eThree-Stage Filtration\u003c\/h3\u003e\n\u003ch4\u003eMechanical Filtration\u003c\/h4\u003e\n\u003cp\u003eThe included reusable foam pad captures fish waste, uneaten food, plant fragments, detritus, and other suspended debris. Mechanical filtration helps keep the aquarium clear while preventing larger particles from coating the biological and chemical media.\u003c\/p\u003e\n\u003cp\u003eThe foam should normally be positioned as the first stage of filtration and cleaned whenever debris buildup begins to reduce water flow.\u003c\/p\u003e\n\u003ch4\u003eBiological Filtration\u003c\/h4\u003e\n\u003cp\u003eIncluded Seachem Matrix provides porous surface area for beneficial bacteria. These bacteria process ammonia and nitrite produced by fish waste, uneaten food, and decomposing organic matter.\u003c\/p\u003e\n\u003cp\u003eMatrix does not instantly cycle an aquarium. The media must be colonized by beneficial bacteria, and a new aquarium still requires regular ammonia and nitrite testing while the biological filter matures.\u003c\/p\u003e\n\u003ch4\u003eChemical Filtration\u003c\/h4\u003e\n\u003cp\u003eThe customizable media basket allows optional chemical filtration to be added according to the aquarium’s needs. Compatible options may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSeachem Purigen for dissolved organic waste and water clarity\u003c\/li\u003e\n\u003cli\u003eMatrixCarbon for odors, discoloration, and many chemical contaminants\u003c\/li\u003e\n\u003cli\u003ePhosGuard or PhosBond for phosphate and silicate control\u003c\/li\u003e\n\u003cli\u003eCupriSorb for copper and heavy-metal removal\u003c\/li\u003e\n\u003cli\u003eZeolite for freshwater ammonia adsorption\u003c\/li\u003e\n\u003cli\u003eFine filter floss for temporary water polishing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChemical media is optional and should be selected according to testing or a specific filtration need rather than automatically adding every available product.\u003c\/p\u003e\n\u003ch3\u003eSelf-Priming Pump\u003c\/h3\u003e\n\u003cp\u003eThe Tidal 35 uses a self-priming pump mounted inside the aquarium. There is no need to manually fill the filter chamber, start a siphon, or pour aquarium water into the filter before startup.\u003c\/p\u003e\n\u003cp\u003eAfter a temporary power outage, the filter is designed to restart automatically when electricity returns, provided the pump and impeller are clean and operating properly.\u003c\/p\u003e\n\u003cp\u003eAlways inspect aquarium equipment after a power interruption. Automatic restart capability does not replace checking that water circulation has resumed.\u003c\/p\u003e\n\u003ch3\u003eBuilt-In Surface Skimmer\u003c\/h3\u003e\n\u003cp\u003eThe surface skimmer draws water from the upper surface of the aquarium, helping remove oily films made from food residue, dissolved organics, dust, and bacterial buildup.\u003c\/p\u003e\n\u003cp\u003eRemoving surface film can improve gas exchange and give the aquarium a cleaner appearance. The filter also draws water through its subsurface intake so circulation is not limited entirely to the surface.\u003c\/p\u003e\n\u003cp\u003eThe Tidal 35 does not include separate surface-versus-subsurface intake-flow regulation. That feature is available on larger Tidal models but not on the Tidal 35.\u003c\/p\u003e\n\u003ch3\u003eAdjustable Return Flow\u003c\/h3\u003e\n\u003cp\u003eThe output flow can be adjusted using the flow-control dial on the filter. This allows the filter to operate at maximum circulation or at a reduced output for aquariums containing fish that prefer calmer water.\u003c\/p\u003e\n\u003cp\u003eReducing the flow can be useful for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBettas and gouramis\u003c\/li\u003e\n\u003cli\u003eSmall community fish\u003c\/li\u003e\n\u003cli\u003eLightly stocked aquariums\u003c\/li\u003e\n\u003cli\u003ePlanted tanks with delicate stems\u003c\/li\u003e\n\u003cli\u003eFeeding periods when strong current moves food too quickly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReducing the output also reduces the amount of water passing through the filter media. Do not lower the flow so far that circulation, oxygenation, or filtration becomes inadequate.\u003c\/p\u003e\n\u003ch3\u003eMaintenance Alert Indicator\u003c\/h3\u003e\n\u003cp\u003eThe Tidal 35 includes a maintenance alert that rises when water can no longer flow freely through the media basket.\u003c\/p\u003e\n\u003cp\u003eThe indicator does not follow a fixed calendar. It responds to increasing resistance caused by dirty foam, clogged filter floss, tightly packed media, or accumulated debris.\u003c\/p\u003e\n\u003cp\u003eWhen the indicator rises, inspect and clean the mechanical filtration first. Avoid replacing all biological media simply because the maintenance alert has activated.\u003c\/p\u003e\n\u003ch3\u003eOverflow Protection\u003c\/h3\u003e\n\u003cp\u003eIf the filter media becomes severely clogged, the Tidal’s overflow design directs water back into the aquarium rather than allowing it to spill behind the tank.\u003c\/p\u003e\n\u003cp\u003eOverflow protection is a backup feature, not a substitute for regular maintenance. A clogged filter provides reduced filtration and should be cleaned promptly.\u003c\/p\u003e\n\u003ch3\u003eAerating Return Flow\u003c\/h3\u003e\n\u003cp\u003eWater returns to the aquarium in a broad flow that creates surface movement. This helps promote gas exchange by allowing oxygen to enter the water and carbon dioxide to leave.\u003c\/p\u003e\n\u003cp\u003eThe amount of aeration depends on the water level, output setting, aquarium cover, stocking level, and other circulation equipment. Heavily stocked or warm aquariums may still require an air pump or additional water movement.\u003c\/p\u003e\n\u003ch3\u003eRecommended Aquarium Sizes\u003c\/h3\u003e\n\u003cp\u003eThe Tidal 35 is rated for aquariums up to 35 gallons, but filter selection should also account for stocking and waste production.\u003c\/p\u003e\n\u003cp\u003eIt is especially well suited for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10- to 20-gallon community aquariums\u003c\/li\u003e\n\u003cli\u003e20-gallon long aquariums\u003c\/li\u003e\n\u003cli\u003e29-gallon freshwater aquariums\u003c\/li\u003e\n\u003cli\u003eSmall planted tanks\u003c\/li\u003e\n\u003cli\u003eSmall marine fish-only systems\u003c\/li\u003e\n\u003cli\u003eNano reef aquariums with appropriate additional circulation\u003c\/li\u003e\n\u003cli\u003eQuarantine and observation tanks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA heavily stocked 35-gallon aquarium, goldfish system, large cichlid setup, or messy-predator tank may require a larger filter or additional filtration despite falling within the stated aquarium rating.\u003c\/p\u003e\n\u003ch3\u003eUsing the Tidal 35 in Planted Aquariums\u003c\/h3\u003e\n\u003cp\u003eThe Tidal 35 may be used in freshwater planted aquariums. Adjustable output allows the flow to be matched to plants and fish while the large media basket provides room for biological and water-polishing media.\u003c\/p\u003e\n\u003cp\u003eSurface agitation can increase gas exchange but may also increase the loss of injected carbon dioxide. In CO₂-injected planted tanks, adjust the water level and output flow to provide adequate oxygenation without creating unnecessary surface turbulence.\u003c\/p\u003e\n\u003cp\u003eThe included Matrix and foam do not provide fertilizer, iron, potassium, carbon, or root nutrition. Plant supplementation must be managed separately.\u003c\/p\u003e\n\u003ch3\u003eUsing the Tidal 35 with Shrimp\u003c\/h3\u003e\n\u003cp\u003eThe Tidal 35 may be used on shrimp aquariums, but the standard intake openings are not guaranteed to prevent juvenile shrimp from entering the filter.\u003c\/p\u003e\n\u003cp\u003eFor shrimp, fry, or very small fish, install a compatible prefilter sponge or fine intake guard. Inspect it regularly because clogged intake protection can reduce filter flow.\u003c\/p\u003e\n\u003cp\u003eA prefilter may also change surface-skimming performance. Confirm that the filter continues to draw water properly after any accessory is installed.\u003c\/p\u003e\n\u003ch3\u003eUsing the Tidal 35 with Bettas\u003c\/h3\u003e\n\u003cp\u003eThe adjustable output can make the Tidal 35 suitable for betta aquariums when flow is reduced appropriately.\u003c\/p\u003e\n\u003cp\u003eObserve the fish after installation. Flow may still be excessive if the betta is continually pushed across the aquarium, avoids the filtered area, has difficulty reaching the surface, or cannot rest comfortably.\u003c\/p\u003e\n\u003cp\u003eDecorations, plants, and strategic filter placement may help create calmer areas while maintaining adequate circulation.\u003c\/p\u003e\n\u003ch3\u003eUsing the Tidal 35 in Saltwater Aquariums\u003c\/h3\u003e\n\u003cp\u003eThe Tidal 35 is suitable for marine and reef aquarium use. Its corrosion-resistant pump and self-cleaning impeller are designed for freshwater and saltwater environments.\u003c\/p\u003e\n\u003cp\u003eIn marine systems, the basket may hold Matrix, activated carbon, Purigen, or phosphate-removing media. Nano reef aquariums may still require a separate circulation pump to provide suitable coral water movement.\u003c\/p\u003e\n\u003cp\u003eSalt buildup should be cleaned from the filter body, cover, pump, and surrounding aquarium surfaces during routine maintenance.\u003c\/p\u003e\n\u003ch3\u003eSuggested Filter Media Arrangement\u003c\/h3\u003e\n\u003cp\u003eA practical general-purpose arrangement is:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottom or First Stage:\u003c\/strong\u003e Reusable Tidal foam for mechanical filtration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMiddle Stage:\u003c\/strong\u003e Optional fine filter pad or chemical media\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal Stage:\u003c\/strong\u003e Seachem Matrix biological filter media\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eMedia placement may be adjusted according to the direction of water flow and the aquarium’s needs. Avoid tightly packing the basket because water must pass through the media efficiently.\u003c\/p\u003e\n\u003ch3\u003eOptional Media Ideas\u003c\/h3\u003e\n\u003ch4\u003eFor Clearer Water\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eReusable foam\u003c\/li\u003e\n\u003cli\u003eFine filter floss\u003c\/li\u003e\n\u003cli\u003ePurigen\u003c\/li\u003e\n\u003cli\u003eMatrix biological media\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFor Removing Odors or Discoloration\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eReusable foam\u003c\/li\u003e\n\u003cli\u003eMatrixCarbon\u003c\/li\u003e\n\u003cli\u003eMatrix biological media\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFor Additional Biological Filtration\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eReusable foam\u003c\/li\u003e\n\u003cli\u003eAdditional Matrix\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFor Phosphate Control\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eReusable foam\u003c\/li\u003e\n\u003cli\u003ePhosGuard or PhosBond in an appropriate media bag\u003c\/li\u003e\n\u003cli\u003eMatrix biological media\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not combine media simply to fill the basket. Use chemical media only when it serves a defined purpose.\u003c\/p\u003e\n\u003ch3\u003eInitial Setup\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eRinse the included foam with clean water.\u003c\/li\u003e\n\u003cli\u003eRinse Matrix to remove loose dust.\u003c\/li\u003e\n\u003cli\u003ePlace the foam and Matrix inside the media basket.\u003c\/li\u003e\n\u003cli\u003eHang the filter securely on the aquarium rim.\u003c\/li\u003e\n\u003cli\u003eAdjust the filter so it sits level against the aquarium.\u003c\/li\u003e\n\u003cli\u003eConfirm that the aquarium water level covers the pump properly.\u003c\/li\u003e\n\u003cli\u003ePlug the filter into a grounded outlet with a drip loop.\u003c\/li\u003e\n\u003cli\u003eAdjust the output flow according to the aquarium’s needs.\u003c\/li\u003e\n\u003cli\u003eCheck for normal circulation and unusual noise.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe self-priming pump eliminates the need to fill the filter body manually before startup.\u003c\/p\u003e\n\u003ch3\u003eRoutine Maintenance\u003c\/h3\u003e\n\u003cp\u003eMaintenance frequency depends on livestock load, feeding, plant debris, and the type of media used. Inspect the filter regularly rather than waiting for water flow to stop.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eUnplug the filter before opening or removing components.\u003c\/li\u003e\n\u003cli\u003eLift out the media basket.\u003c\/li\u003e\n\u003cli\u003eRinse the foam in removed aquarium water or clean dechlorinated water.\u003c\/li\u003e\n\u003cli\u003eGently rinse Matrix only when debris is restricting flow.\u003c\/li\u003e\n\u003cli\u003eReplace exhausted chemical media according to its individual directions.\u003c\/li\u003e\n\u003cli\u003eClean the pump and impeller when flow declines or noise increases.\u003c\/li\u003e\n\u003cli\u003eInspect the filter housing and intake openings for debris.\u003c\/li\u003e\n\u003cli\u003eReassemble the filter and confirm proper operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eCleaning the Foam\u003c\/h3\u003e\n\u003cp\u003eThe included foam is reusable and does not require automatic monthly replacement. Rinse it whenever debris buildup reduces water flow.\u003c\/p\u003e\n\u003cp\u003eFoam may contain beneficial bacteria, especially in established aquariums. Avoid cleaning it with untreated chlorinated tap water if it represents a substantial portion of the aquarium’s biological filtration.\u003c\/p\u003e\n\u003cp\u003eReplace the foam only when it becomes permanently compressed, damaged, or unable to maintain its shape.\u003c\/p\u003e\n\u003ch3\u003eMaintaining Matrix Biological Media\u003c\/h3\u003e\n\u003cp\u003eMatrix should not be routinely replaced. Beneficial bacteria live throughout the media, and unnecessary replacement can reduce biological filtration.\u003c\/p\u003e\n\u003cp\u003eWhen Matrix becomes dirty, gently rinse it in water removed during an aquarium water change. Avoid aggressive scrubbing, soap, bleach, or untreated chlorinated water.\u003c\/p\u003e\n\u003cp\u003eOnly a portion of established biological media should be replaced at one time when replacement becomes necessary.\u003c\/p\u003e\n\u003ch3\u003eImpeller Maintenance\u003c\/h3\u003e\n\u003cp\u003eThe Tidal uses a self-cleaning impeller design, but the pump may still accumulate mineral deposits, sand, plant fragments, algae, or debris.\u003c\/p\u003e\n\u003cp\u003eInspect the pump and impeller if:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWater flow decreases after the media has been cleaned\u003c\/li\u003e\n\u003cli\u003eThe filter becomes louder than normal\u003c\/li\u003e\n\u003cli\u003eThe filter rattles or vibrates\u003c\/li\u003e\n\u003cli\u003eThe pump does not restart after maintenance\u003c\/li\u003e\n\u003cli\u003eSand or fine substrate has entered the intake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUnplug the filter before servicing the pump. Follow the manufacturer’s instructions and avoid using soap or detergent.\u003c\/p\u003e\n\u003ch3\u003eNoise and Quiet Operation\u003c\/h3\u003e\n\u003cp\u003eThe Tidal 35 is designed for quiet operation when correctly installed, filled, and maintained. Actual noise depends on water level, flow setting, impeller cleanliness, aquarium rim shape, and contact with the wall or aquarium lid.\u003c\/p\u003e\n\u003cp\u003eIf the filter becomes noisy:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCheck that it is seated level on the aquarium\u003c\/li\u003e\n\u003cli\u003eRaise the aquarium water level\u003c\/li\u003e\n\u003cli\u003eClean the pump and impeller\u003c\/li\u003e\n\u003cli\u003eRemove trapped debris\u003c\/li\u003e\n\u003cli\u003eMake sure the cover is properly seated\u003c\/li\u003e\n\u003cli\u003eConfirm that the filter is not vibrating against the wall or aquarium lid\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTidal 35 vs. Larger Tidal Models\u003c\/h3\u003e\n\u003cp\u003eThe Tidal 35 includes many of the main Tidal features but has a more compact design than the 55, 75, and 110 models.\u003c\/p\u003e\n\u003cp\u003eThe Tidal 35 does not include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA telescoping intake tube\u003c\/li\u003e\n\u003cli\u003eA heater holder\u003c\/li\u003e\n\u003cli\u003eSeparate surface-versus-subsurface intake-flow regulation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCustomers requiring more media capacity, stronger flow, an adjustable intake tube, or additional accessory features may prefer the Tidal 55 or a larger model.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eTidal filters are covered against defects in materials and workmanship for three years from the purchase date, excluding the pump impeller. Registering the filter with Seachem may extend eligible warranty coverage to five years.\u003c\/p\u003e\n\u003cp\u003eImproper use, unauthorized modification, tampering, or negligence may void warranty coverage. Keep the receipt and follow the manufacturer’s care instructions.\u003c\/p\u003e\n\u003ch3\u003eImportant Aquarium Care Note\u003c\/h3\u003e\n\u003cp\u003eThe Tidal 35 supports aquarium filtration but does not instantly cycle a new tank or eliminate the need for maintenance.\u003c\/p\u003e\n\u003cp\u003eContinue regular water changes, substrate cleaning, filter maintenance, and water testing. Monitor ammonia, nitrite, nitrate, pH, temperature, GH, KH, salinity, and other parameters appropriate for the aquarium.\u003c\/p\u003e\n\u003cp\u003eThe “up to 35 gallons” rating assumes a reasonably stocked and maintained aquarium. Heavy fish loads, goldfish, large cichlids, messy predators, or aquariums with unusually high waste production may require additional or larger filtration.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size aquarium is the Seachem Tidal 35 designed for?\u003c\/strong\u003e\u003cbr\u003eIt is rated for freshwater and saltwater aquariums up to 35 US gallons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the flow rate?\u003c\/strong\u003e\u003cbr\u003eThe maximum flow rate is approximately 130 gallons per hour.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the flow be adjusted?\u003c\/strong\u003e\u003cbr\u003eYes. The output flow can be reduced using the filter’s flow-control dial.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the Tidal 35 prime itself?\u003c\/strong\u003e\u003cbr\u003eYes. The pump is self-priming, so the filter does not need to be manually filled before startup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it restart after a power outage?\u003c\/strong\u003e\u003cbr\u003eIt is designed to restart automatically when power returns, provided the pump and impeller are clean and operating correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it include filter media?\u003c\/strong\u003e\u003cbr\u003eYes. It includes a reusable mechanical foam pad and Seachem Matrix biological media.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it include activated carbon?\u003c\/strong\u003e\u003cbr\u003eNo. Carbon and other chemical media are optional and normally sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it have a surface skimmer?\u003c\/strong\u003e\u003cbr\u003eYes. The built-in surface skimmer helps remove oily films from the water surface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the surface-skimmer intake be adjusted separately?\u003c\/strong\u003e\u003cbr\u003eNo. The Tidal 35 does not have the separate intake-flow regulation found on larger Tidal models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the Tidal 35 have an intake tube?\u003c\/strong\u003e\u003cbr\u003eIt has built-in intake openings but does not include the telescoping intake tube supplied with larger Tidal filters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it include a heater holder?\u003c\/strong\u003e\u003cbr\u003eNo. The heater-holder feature is found on larger Tidal models, not the Tidal 35.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it suitable for planted aquariums?\u003c\/strong\u003e\u003cbr\u003eYes. The adjustable flow and customizable basket make it suitable for planted systems when circulation is matched to the aquarium.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it safe for shrimp?\u003c\/strong\u003e\u003cbr\u003eIt can be used in shrimp aquariums, but an intake guard or prefilter sponge is recommended to protect juvenile shrimp.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it suitable for bettas?\u003c\/strong\u003e\u003cbr\u003eIt may be suitable when the output is reduced and the betta has calm resting areas. Observe the fish to confirm the current is not excessive.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used in saltwater or reef aquariums?\u003c\/strong\u003e\u003cbr\u003eYes. The Tidal 35 is designed for freshwater and saltwater use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the foam reusable?\u003c\/strong\u003e\u003cbr\u003eYes. Rinse and reuse it until it becomes damaged or permanently compressed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should Matrix be replaced?\u003c\/strong\u003e\u003cbr\u003eMatrix does not require routine replacement. Gently rinse it when debris restricts water flow.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the maintenance alert mean?\u003c\/strong\u003e\u003cbr\u003eIt indicates that water flow through the media basket is restricted and the filter media should be inspected and cleaned.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Tidal 35 quiet?\u003c\/strong\u003e\u003cbr\u003eIt is designed for quiet operation. Water level, impeller cleanliness, installation, and contact with nearby surfaces can affect the actual noise level.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it replace aquarium water changes?\u003c\/strong\u003e\u003cbr\u003eNo. Filtration does not remove every dissolved waste product or replace regular water changes and aquarium maintenance.\u003c\/p\u003e\n\u003ch3\u003eAvailable at Tropical Treasures Wyo\u003c\/h3\u003e\n\u003cp\u003eThe Seachem Tidal 35 HOB Filter combines 130 GPH adjustable flow, self-priming operation, surface skimming, reusable mechanical foam, and Seachem Matrix biological media for freshwater and saltwater aquariums up to 35 gallons.\u003c\/p\u003e\n\u003cp\u003eVisit Tropical Treasures Wyo in Cheyenne, Wyoming, to shop Seachem Tidal filters, replacement foam, Matrix biological media, Purigen, MatrixCarbon, intake protection, aquarium test kits, and filtration supplies.\u003c\/p\u003e","brand":"Tropical Treasures Wyo LLC","offers":[{"title":"Default Title","offer_id":51553037287637,"sku":"80N649","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/4545\/8133\/files\/SC06581-2T.png?v=1784998790","url":"https:\/\/tropicaltreasureswyo.com\/products\/seachem-tidal-35-hob-filter","provider":"Tropical Treasures Wyo LLC","version":"1.0","type":"link"}