{"product_id":"seachem-purigen-2l","title":"Seachem Purigen® – 2 L","description":"\u003cp\u003e\u003cstrong\u003eSeachem Purigen® 2 L\u003c\/strong\u003e is a premium synthetic filtration resin designed to remove organic waste and polish aquarium water to exceptional clarity. It can be used in both freshwater and saltwater aquariums and is especially useful in larger systems, fish rooms, retail aquariums, and high-bioload setups.\u003c\/p\u003e\n\u003cp\u003eUnlike conventional activated carbon, Purigen® is a specialized macro-porous polymer with a strong affinity for nitrogenous organic waste. By removing these compounds before they break down, Purigen® helps reduce the organic load that would otherwise contribute to ammonia, nitrite, and nitrate.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePremium synthetic organic filtration resin\u003c\/li\u003e\n\u003cli\u003e2 L \/ 122 in³ bulk size\u003c\/li\u003e\n\u003cli\u003eSuitable for freshwater and saltwater aquariums\u003c\/li\u003e\n\u003cli\u003eRemoves soluble and insoluble organic impurities\u003c\/li\u003e\n\u003cli\u003eHelps control ammonia, nitrite, and nitrate indirectly by removing organic waste\u003c\/li\u003e\n\u003cli\u003ePolishes aquarium water for exceptional clarity\u003c\/li\u003e\n\u003cli\u003eMinimal impact on trace elements\u003c\/li\u003e\n\u003cli\u003eChanges color as it becomes exhausted\u003c\/li\u003e\n\u003cli\u003eCan be regenerated and reused\u003c\/li\u003e\n\u003cli\u003eIdeal for canister filters, media chambers, box filters, and other high-flow filtration areas\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 Seachem\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Purigen®\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 2 L \/ 122 in³\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Synthetic organic filtration resin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Freshwater and saltwater aquariums\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e Loose filtration media\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat Does Purigen® Do?\u003c\/h3\u003e\n\u003cp\u003ePurigen® is designed to remove nitrogenous organic compounds from aquarium water before they can break down into ammonia, nitrite, and nitrate.\u003c\/p\u003e\n\u003cp\u003eIt is particularly effective at removing:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDissolved organic waste\u003c\/li\u003e\n\u003cli\u003eParticulate organic impurities\u003c\/li\u003e\n\u003cli\u003eCompounds that contribute to water discoloration\u003c\/li\u003e\n\u003cli\u003eOrganic material that can reduce water clarity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePurigen® does not directly remove ammonia, nitrite, or nitrate in the same way as a dedicated chemical remover. Instead, it removes organic waste before that material is converted into these compounds.\u003c\/p\u003e\n\u003ch3\u003eHow Much Water Does 2 L Treat?\u003c\/h3\u003e\n\u003cp\u003eSeachem states that \u003cstrong\u003e250 mL treats up to 250 US gallons for up to six months\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBased on that dosage, a full \u003cstrong\u003e2 L container can treat up to approximately 2,000 US gallons\u003c\/strong\u003e under comparable aquarium conditions.\u003c\/p\u003e\n\u003cp\u003eActual lifespan will vary depending on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFish stocking level\u003c\/li\u003e\n\u003cli\u003eFeeding\u003c\/li\u003e\n\u003cli\u003eOrganic waste load\u003c\/li\u003e\n\u003cli\u003eFilter flow\u003c\/li\u003e\n\u003cli\u003eMaintenance schedule\u003c\/li\u003e\n\u003cli\u003eOverall aquarium conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Purigen®\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eRinse before use.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBecause Purigen® consists of very small resin beads, it should be placed in a \u003cstrong\u003efine mesh filter bag of approximately 180 microns or finer\u003c\/strong\u003e, such as Seachem The Bag™.\u003c\/p\u003e\n\u003cp\u003eFor best results, position Purigen® where aquarium water is forced to flow directly through the media.\u003c\/p\u003e\n\u003ch3\u003eRecommended Filter Placement\u003c\/h3\u003e\n\u003cp\u003ePurigen® can be used in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCanister filters\u003c\/li\u003e\n\u003cli\u003eSumps\u003c\/li\u003e\n\u003cli\u003eMedia chambers\u003c\/li\u003e\n\u003cli\u003eHang-on-back filter media compartments\u003c\/li\u003e\n\u003cli\u003eBox filters\u003c\/li\u003e\n\u003cli\u003eHigh-flow areas of trickle filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMaximum effectiveness is achieved when water passes through the Purigen® rather than flowing around the media bag.\u003c\/p\u003e\n\u003ch3\u003eHow Do I Know When Purigen® Is Exhausted?\u003c\/h3\u003e\n\u003cp\u003eFresh Purigen® has a pale, light-colored appearance.\u003c\/p\u003e\n\u003cp\u003eAs it adsorbs organic waste, it gradually changes to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTan\u003c\/li\u003e\n\u003cli\u003eBrown\u003c\/li\u003e\n\u003cli\u003eDark brown\u003c\/li\u003e\n\u003cli\u003eAlmost black when heavily exhausted\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA pronounced dark brown or black appearance indicates that the media should be regenerated or replaced.\u003c\/p\u003e\n\u003ch3\u003ePurigen® Regeneration\u003c\/h3\u003e\n\u003cp\u003eOne of the major advantages of Purigen® is that it can be regenerated and reused.\u003c\/p\u003e\n\u003cp\u003eSeachem's current regeneration procedure is:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ePlace exhausted Purigen® in a non-metallic container.\u003c\/li\u003e\n\u003cli\u003eSoak for 24 hours in a 1:1 mixture of water and regular 8.25% sodium hypochlorite household bleach.\u003c\/li\u003e\n\u003cli\u003eUse only unscented bleach with no dyes or additives.\u003c\/li\u003e\n\u003cli\u003eDo not use splash-less bleach.\u003c\/li\u003e\n\u003cli\u003eRinse the media thoroughly.\u003c\/li\u003e\n\u003cli\u003eSoak for 8 hours in water containing 4 tablespoons of Seachem Prime® per cup of water.\u003c\/li\u003e\n\u003cli\u003eRinse thoroughly again.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eAdditional Step for Freshwater Aquariums\u003c\/h3\u003e\n\u003cp\u003eFor freshwater use, Seachem recommends an additional \u003cstrong\u003e4-hour soak\u003c\/strong\u003e using:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2 tablespoons of Discus Buffer® or Neutral Regulator® per cup of water.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAfter regeneration, the media should return close to its original light coloration.\u003c\/p\u003e\n\u003ch3\u003eImportant Regeneration Warning\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNever return regenerated Purigen® to the aquarium if any chlorine or bleach odor remains.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf there is any doubt:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRepeat the dechlorination soak\u003c\/li\u003e\n\u003cli\u003eRinse thoroughly\u003c\/li\u003e\n\u003cli\u003eTest the soak water for residual chlorine before reuse\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSome slime-coat products can permanently foul Purigen® and make regeneration difficult or impossible.\u003c\/p\u003e\n\u003ch3\u003ePurigen® vs. Activated Carbon\u003c\/h3\u003e\n\u003cp\u003ePurigen® and activated carbon both help improve aquarium water quality, but they work differently.\u003c\/p\u003e\n\u003cp\u003ePurigen® is specifically designed to target organic nitrogenous waste and can be regenerated multiple times, while standard activated carbon is generally discarded once exhausted.\u003c\/p\u003e\n\u003cp\u003eMany aquarists use Purigen® as a long-term polishing media in systems where reusable filtration is preferred.\u003c\/p\u003e\n\u003ch3\u003eFreshwater and Saltwater Use\u003c\/h3\u003e\n\u003cp\u003ePurigen® is suitable for a wide variety of aquarium systems, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreshwater community aquariums\u003c\/li\u003e\n\u003cli\u003ePlanted aquariums\u003c\/li\u003e\n\u003cli\u003eCichlid aquariums\u003c\/li\u003e\n\u003cli\u003eGoldfish aquariums\u003c\/li\u003e\n\u003cli\u003eMarine fish aquariums\u003c\/li\u003e\n\u003cli\u003eReef aquariums\u003c\/li\u003e\n\u003cli\u003eLarge display systems\u003c\/li\u003e\n\u003cli\u003eFish rooms\u003c\/li\u003e\n\u003cli\u003eRetail aquarium systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose the 2 L Size?\u003c\/h3\u003e\n\u003cp\u003eThe 2 L size is especially useful for aquarists maintaining:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMultiple aquariums\u003c\/li\u003e\n\u003cli\u003eLarge freshwater displays\u003c\/li\u003e\n\u003cli\u003eLarge marine systems\u003c\/li\u003e\n\u003cli\u003eFish rooms\u003c\/li\u003e\n\u003cli\u003eRetail aquarium systems\u003c\/li\u003e\n\u003cli\u003eHigh-bioload aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBuying Purigen® in bulk also allows the aquarist to portion the exact amount needed for each filter or aquarium.\u003c\/p\u003e\n\u003ch3\u003eImportant Use Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRinse before use.\u003c\/li\u003e\n\u003cli\u003eUse a fine mesh filter bag of 180 microns or finer.\u003c\/li\u003e\n\u003cli\u003ePlace in an area with strong water flow.\u003c\/li\u003e\n\u003cli\u003eMonitor the color of the media for exhaustion.\u003c\/li\u003e\n\u003cli\u003eRegenerate according to Seachem instructions only.\u003c\/li\u003e\n\u003cli\u003eNever use scented, dyed, or splash-less bleach for regeneration.\u003c\/li\u003e\n\u003cli\u003eNever return the media to the aquarium if chlorine odor remains.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow much water does 2 L of Purigen® treat?\u003c\/strong\u003e\u003cbr\u003eBased on Seachem's stated dosage of 250 mL per 250 gallons, 2 L can treat up to approximately 2,000 gallons under comparable conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does Purigen® last?\u003c\/strong\u003e\u003cbr\u003eSeachem states that 250 mL can treat up to 250 gallons for up to six months. Actual service life depends heavily on the aquarium's organic waste load.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan Purigen® be reused?\u003c\/strong\u003e\u003cbr\u003eYes. It can be regenerated using Seachem's bleach and dechlorination procedure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan Purigen® be used in freshwater?\u003c\/strong\u003e\u003cbr\u003eYes. It is suitable for both freshwater and marine aquariums.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan Purigen® be used in reef aquariums?\u003c\/strong\u003e\u003cbr\u003eYes. Seachem designs Purigen® for both freshwater and marine use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes Purigen® remove nitrate?\u003c\/strong\u003e\u003cbr\u003ePurigen® primarily removes nitrogenous organic waste before that material breaks down into ammonia, nitrite, and nitrate. It should not be treated as a direct replacement for normal nitrate control and water changes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 2 L size come pre-bagged?\u003c\/strong\u003e\u003cbr\u003eNo. The 2 L size is bulk loose media and should be placed into an appropriately fine filter bag before use.\u003c\/p\u003e\n\u003ch3\u003eAvailable at Tropical Treasures Wyo\u003c\/h3\u003e\n\u003cp\u003eSeachem Purigen® 2 L is available at \u003cstrong\u003eTropical Treasures Wyo\u003c\/strong\u003e in Cheyenne, Wyoming, when in stock.\u003c\/p\u003e\n\u003cp\u003eEligible dry goods are available for shipping.\u003c\/p\u003e","brand":"Tropical Treasures Wyo LLC","offers":[{"title":"Default Title","offer_id":54972297740501,"sku":null,"price":116.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/4545\/8133\/files\/000116016803.jpg?v=1789732883","url":"https:\/\/tropicaltreasureswyo.com\/products\/seachem-purigen-2l","provider":"Tropical Treasures Wyo LLC","version":"1.0","type":"link"}