{"product_id":"sera-prefix-filter","title":"Sera PrefiX Filter – Auxiliary Prefilter \u0026 Biofilter","description":"\u003cp\u003eThe sera PrefiX Filter is a versatile, motorless auxiliary aquarium filter designed to expand the filtration capacity of a compatible pump or external canister filter. It adds up to 1.6 liters, or approximately 0.4 US gallons, of additional filter volume through two independently usable media baskets.\u003c\/p\u003e\n\u003cp\u003eDepending on the filter media installed, the PrefiX Filter can be used as a mechanical prefilter for trapping debris, a quick filter for responding to cloudy or polluted water, or an additional biological filter for expanding the capacity of smaller external filters.\u003c\/p\u003e\n\u003cp\u003eBecause the PrefiX Filter does not contain its own motor, it must be connected to a compatible aquarium pump or external filter. It uses standard 16\/22 mm aquarium hose and can be installed in freshwater or marine aquarium systems.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpands Filter Capacity:\u003c\/strong\u003e Adds up to 1.6 liters of additional filter-media volume\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Media Baskets:\u003c\/strong\u003e Allows mechanical, biological, or specialty media to be arranged according to the aquarium’s needs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Filtration Uses:\u003c\/strong\u003e Can function as a prefilter, quick filter, or supplementary biological filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotorless Design:\u003c\/strong\u003e Operates using water flow supplied by a connected pump or external filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16\/22 mm Hose Connection:\u003c\/strong\u003e Connects to compatible aquarium filtration equipment using sera 16\/22 mm hose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater \u0026amp; Marine Use:\u003c\/strong\u003e Suitable for freshwater, planted, brackish, and saltwater aquariums\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpandable Setup:\u003c\/strong\u003e Multiple PrefiX Filters may be connected in series when additional capacity is required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Media Access:\u003c\/strong\u003e Provides a convenient location for media that may need frequent cleaning or replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e sera\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e PrefiX Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Number:\u003c\/strong\u003e 32155\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Motorless auxiliary aquarium filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Filter Volume:\u003c\/strong\u003e Up to 1.6 liters \/ approximately 0.4 US gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia Baskets:\u003c\/strong\u003e Two\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose Size:\u003c\/strong\u003e 16\/22 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAquarium Type:\u003c\/strong\u003e Freshwater and marine aquariums\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Source:\u003c\/strong\u003e Requires connection to a compatible pump or external filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBest Used For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdding a prefilter to an external canister filter\u003c\/li\u003e\n\u003cli\u003eCapturing debris before it reaches the main filter\u003c\/li\u003e\n\u003cli\u003eIncreasing biological filtration capacity\u003c\/li\u003e\n\u003cli\u003eTemporary water polishing after aquarium maintenance\u003c\/li\u003e\n\u003cli\u003eResponding to cloudy aquarium water\u003c\/li\u003e\n\u003cli\u003eProtecting expensive biological media from excessive debris\u003c\/li\u003e\n\u003cli\u003eExpanding smaller external filter systems\u003c\/li\u003e\n\u003cli\u003eFreshwater community aquariums\u003c\/li\u003e\n\u003cli\u003ePlanted aquariums\u003c\/li\u003e\n\u003cli\u003eMarine and saltwater aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThree Filtration Options\u003c\/h3\u003e\n\u003ch4\u003eMechanical Prefilter\u003c\/h4\u003e\n\u003cp\u003eWhen filled with mechanical filter media, the sera PrefiX Filter can trap fish waste, uneaten food, plant fragments, detritus, and suspended particles before they enter the main external filter.\u003c\/p\u003e\n\u003cp\u003eUsing the unit as a prefilter can help keep biological media cleaner and may reduce how frequently the main canister filter needs to be opened for maintenance.\u003c\/p\u003e\n\u003ch4\u003eQuick Filter\u003c\/h4\u003e\n\u003cp\u003eThe PrefiX Filter can also be filled with fine mechanical media for temporary use when aquarium water becomes cloudy or contains additional suspended debris.\u003c\/p\u003e\n\u003cp\u003eThis can be useful after substrate cleaning, aquascaping, plant trimming, filter maintenance, or another event that releases particles into the water column.\u003c\/p\u003e\n\u003ch4\u003eSupplementary Biological Filter\u003c\/h4\u003e\n\u003cp\u003eWhen filled with high-surface-area biological media, the PrefiX Filter can provide additional space for beneficial bacteria. This may be useful when expanding the filtration capacity of a smaller external filter or supporting a heavily stocked aquarium.\u003c\/p\u003e\n\u003cp\u003eThe additional media does not instantly cycle an aquarium. Biological media must be given time to become colonized by beneficial bacteria.\u003c\/p\u003e\n\u003ch3\u003eFilter Media Options\u003c\/h3\u003e\n\u003cp\u003eThe two baskets may be filled with aquarium filter media selected for the system’s specific needs. Suitable options may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCoarse mechanical foam\u003c\/li\u003e\n\u003cli\u003eFine filter pads or filter wool\u003c\/li\u003e\n\u003cli\u003esera siporax biological filter media\u003c\/li\u003e\n\u003cli\u003eActivated carbon for temporary chemical filtration\u003c\/li\u003e\n\u003cli\u003ePhosphate-removing media\u003c\/li\u003e\n\u003cli\u003eOther compatible granular aquarium filter media\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen using fine or loose filter media, sera recommends placing the material inside a compatible sera filter media bag to help keep particles contained.\u003c\/p\u003e\n\u003ch3\u003eHow to Install\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn off and unplug the aquarium pump or external filter.\u003c\/li\u003e\n\u003cli\u003eChoose an accessible location for the PrefiX Filter.\u003c\/li\u003e\n\u003cli\u003eFill the two baskets with the desired filter media.\u003c\/li\u003e\n\u003cli\u003eSecure fine or loose media inside an appropriate media bag.\u003c\/li\u003e\n\u003cli\u003eConnect the PrefiX Filter to the pump or external filter using compatible 16\/22 mm hose.\u003c\/li\u003e\n\u003cli\u003eMake sure all hose connections are fully seated and secure.\u003c\/li\u003e\n\u003cli\u003ePrime the filtration system according to the pump or external filter instructions.\u003c\/li\u003e\n\u003cli\u003eRestart the system and carefully check every connection for leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe exact hose routing depends on whether the PrefiX Filter is being installed as a prefilter, supplementary filter, or quick filter. Follow the manufacturer’s instructions for the connected pump or external filter.\u003c\/p\u003e\n\u003ch3\u003eConnecting to an External Filter\u003c\/h3\u003e\n\u003cp\u003eWhen used as a prefilter, the PrefiX Filter is generally installed in the intake line before water reaches the main external filter. This allows the auxiliary media to capture debris before it enters the canister.\u003c\/p\u003e\n\u003cp\u003eConfirm that the connected external filter is compatible with 16\/22 mm hose and that the additional restriction does not reduce water flow below an acceptable level.\u003c\/p\u003e\n\u003cp\u003eClean mechanical media regularly. A heavily clogged prefilter can restrict the flow of water to the main external filter.\u003c\/p\u003e\n\u003ch3\u003eConnecting to an Aquarium Pump\u003c\/h3\u003e\n\u003cp\u003eThe PrefiX Filter may also be connected to a compatible aquarium pump. The pump provides the water movement required to pull or push water through the filter baskets.\u003c\/p\u003e\n\u003cp\u003eMake sure the selected pump has suitable connections and adequate performance for the intended installation. Actual water flow will be affected by hose length, height, bends, installed media, and the amount of debris trapped in the filter.\u003c\/p\u003e\n\u003ch3\u003eConnecting Multiple PrefiX Filters\u003c\/h3\u003e\n\u003cp\u003eMultiple sera PrefiX Filters may be connected in series when additional filter volume or separate filtration stages are desired.\u003c\/p\u003e\n\u003cp\u003eFor example, one unit may hold mechanical media while a second contains biological or chemical media. Each additional unit can increase resistance, so water flow should be checked after installation.\u003c\/p\u003e\n\u003cp\u003eAvoid adding more filters than the connected pump or external filter can operate effectively.\u003c\/p\u003e\n\u003ch3\u003eMaintenance\u003c\/h3\u003e\n\u003cp\u003eInspect the PrefiX Filter regularly and clean the installed media whenever water flow begins to decline or debris becomes visible.\u003c\/p\u003e\n\u003cp\u003eMechanical media may require frequent rinsing, especially when the unit is being used as a prefilter. Biological media should be cleaned more gently to preserve beneficial bacteria.\u003c\/p\u003e\n\u003cp\u003eFor routine biological-media maintenance, rinse the media in water removed from the aquarium during a water change. Do not use soap, bleach, detergent, or household cleaners.\u003c\/p\u003e\n\u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTurn off the connected pump or external filter before opening the PrefiX Filter\u003c\/li\u003e\n\u003cli\u003eClose any available hose valves before disconnecting the unit\u003c\/li\u003e\n\u003cli\u003ePlace a towel or shallow container beneath the filter during maintenance\u003c\/li\u003e\n\u003cli\u003eClean mechanical media when water flow decreases\u003c\/li\u003e\n\u003cli\u003eRinse biological media gently in removed aquarium water\u003c\/li\u003e\n\u003cli\u003eDo not replace all established biological media at one time\u003c\/li\u003e\n\u003cli\u003eInspect hose connections and seals for wear\u003c\/li\u003e\n\u003cli\u003eConfirm that the filter is securely closed before restarting the system\u003c\/li\u003e\n\u003cli\u003eCheck carefully for leaks after every cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBenefits as a Prefilter\u003c\/h3\u003e\n\u003cp\u003eExternal canister filters can become difficult and time-consuming to clean, particularly when large amounts of solid waste enter the filter. Installing a PrefiX Filter before the main canister creates an accessible first stage for collecting debris.\u003c\/p\u003e\n\u003cp\u003eBecause the auxiliary unit can be serviced separately, aquarium keepers may be able to clean mechanical media without disturbing the biological media inside the main external filter.\u003c\/p\u003e\n\u003cp\u003eThis arrangement can help maintain water flow, protect biological media from clogging, and simplify routine aquarium maintenance.\u003c\/p\u003e\n\u003ch3\u003eImportant Aquarium Care Note\u003c\/h3\u003e\n\u003cp\u003eThe sera PrefiX Filter is motorless and cannot circulate aquarium water by itself. It must be connected to a compatible pump or external filter.\u003c\/p\u003e\n\u003cp\u003eAdding the PrefiX Filter may reduce overall water flow, especially when it is filled with dense media or becomes clogged. Monitor the connected filter’s output and clean the media as needed.\u003c\/p\u003e\n\u003cp\u003eThe PrefiX Filter does not replace regular water changes, aquarium cycling, water testing, water conditioning, or proper biological filtration.\u003c\/p\u003e\n\u003cp\u003eAlways turn off electrical aquarium equipment before opening hoses or filter components. Check all connections for leaks before leaving the aquarium unattended.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the sera PrefiX Filter?\u003c\/strong\u003e\u003cbr\u003eIt is a motorless auxiliary filter that connects to a compatible aquarium pump or external filter to add mechanical, biological, or chemical filtration capacity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the PrefiX Filter include a motor?\u003c\/strong\u003e\u003cbr\u003eNo. Water flow must be supplied by a connected pump or external canister filter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much filter capacity does it add?\u003c\/strong\u003e\u003cbr\u003eIt adds up to 1.6 liters, or approximately 0.4 US gallons, of filter volume.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many media baskets does it contain?\u003c\/strong\u003e\u003cbr\u003eThe PrefiX Filter contains two variably usable filter baskets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat hose size does it use?\u003c\/strong\u003e\u003cbr\u003eIt connects using 16\/22 mm aquarium hose.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used as a prefilter?\u003c\/strong\u003e\u003cbr\u003eYes. It can trap debris before the water reaches a connected external filter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it provide biological filtration?\u003c\/strong\u003e\u003cbr\u003eYes. The baskets may be filled with biological media to expand the aquarium’s filtration capacity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used for water polishing?\u003c\/strong\u003e\u003cbr\u003eYes. Fine mechanical media may be used temporarily to capture suspended particles and cloudiness.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan more than one PrefiX Filter be connected?\u003c\/strong\u003e\u003cbr\u003eYes. sera states that multiple units may be connected in series.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan loose filter media be used?\u003c\/strong\u003e\u003cbr\u003eYes. sera recommends using compatible filter media bags when installing fine-grained media.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it suitable for freshwater aquariums?\u003c\/strong\u003e\u003cbr\u003eYes. It is suitable for freshwater and planted aquariums.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used in a saltwater aquarium?\u003c\/strong\u003e\u003cbr\u003eYes. The PrefiX Filter is suitable for freshwater and marine aquarium systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with filter media?\u003c\/strong\u003e\u003cbr\u003eFilter-media contents may vary by package or retailer. Confirm the included components before purchase and select media appropriate for the intended use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it reduce water flow?\u003c\/strong\u003e\u003cbr\u003eAny additional filter, hose, or media can create resistance. Clean the media regularly and confirm that the connected pump or filter maintains sufficient flow.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should it be cleaned?\u003c\/strong\u003e\u003cbr\u003eCleaning frequency depends on the installed media and aquarium waste load. Clean it whenever debris accumulates or water flow begins to decline.\u003c\/p\u003e\n\u003ch3\u003eAvailable at Tropical Treasures Wyo\u003c\/h3\u003e\n\u003cp\u003eThe sera PrefiX Filter provides up to 1.6 liters of flexible mechanical, biological, or chemical filtration capacity for compatible aquarium pumps and external filters. Visit Tropical Treasures Wyo in Cheyenne, Wyoming, to shop sera filters, aquarium pumps, filter media, media bags, hoses, canister filters, and aquarium maintenance supplies.\u003c\/p\u003e","brand":"Tropical Treasures Wyo LLC","offers":[{"title":"Default Title","offer_id":54335374065877,"sku":null,"price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/4545\/8133\/files\/SER45084-2T.png?v=1784987550","url":"https:\/\/tropicaltreasureswyo.com\/products\/sera-prefix-filter","provider":"Tropical Treasures Wyo LLC","version":"1.0","type":"link"}