{"product_id":"seachem-purigen","title":"Purigen 100 ml to 500 ml — Regenerable Organic Resin 500% More Efficient - Seachem","description":"\u003cp\u003e Seachem Purigen 250 ml is a synthetic macroporous adsorption resin that removes soluble and insoluble impurities from water at a rate and capacity exceeding all competing products by more than 500%. Specifically designed as an organic recovery resin, it selectively targets nitrogenous organic waste to control ammonia, nitrites, and nitrates at the source. The 250 ml format treats up to 1000 L (250 US gallons) for up to six months, making it ideal for medium-sized reef and marine aquariums.\u003c\/p\u003e\n\n\n\u003ch2\u003e Main advantages\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Organic adsorption capacity exceeding that of competing products by more than 500%\u003c\/li\u003e\n\n\u003cli\u003e Spherical and macro-porous macroreticular polymer — increased usable surface area compared to standard resins\u003c\/li\u003e\n\n\u003cli\u003e 250 ml treats up to 1000 L (250 US gallons) for a maximum duration of six months\u003c\/li\u003e\n\n \u003cli\u003eMinimal impact on trace elements — significantly increases redox potential\u003c\/li\u003e\n\n\u003cli\u003e Regenerable with bleach — visual indicator of depletion (light blonde → dark brown)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch2\u003e Use in reef and marine aquariums\u003c\/h2\u003e\n\n\u003cp\u003e Purigen selectively targets nitrogenous organic compounds produced by fish, corals, and invertebrates. Unlike ion-exchange resins that quickly saturate with metals and contaminants, Purigen ignores simple elemental compounds and has an extreme affinity for nitrogenous organics. It polishes the water for unparalleled clarity while increasing the redox potential. Purigen can be used in a canister filter, media chamber, box filter, or any high-flow area of ​​a filter. Compatible with both saltwater and freshwater systems.\u003c\/p\u003e\n\n\n\u003ch2\u003e Instructions for use\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Rinse before use\u003c\/li\u003e\n\n\u003cli\u003e Place in a fine mesh bag (180 microns or less) such as the Seachem The Bag\u003c\/li\u003e\n\n \u003cli\u003ePosition to maximize water flow through the resin\u003c\/li\u003e\n\n\u003cli\u003e Each 250 ml treats up to 1000 L (250 US gallons) for a maximum of six months.\u003c\/li\u003e\n\n\u003cli\u003e Exhaustion is indicated by a pronounced color change to dark brown or black.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch2\u003e Regeneration\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Soak in a 1:1 bleach:water solution for 24 hours in a non-metallic container, in a well-ventilated area.\u003c\/li\u003e\n\n\u003cli\u003e Use regular household bleach with 8.25% hypochlorite (perfume-free, dye-free, not splash-proof type)\u003c\/li\u003e\n\n\u003cli\u003e Rinse thoroughly, then soak for 8 hours in a solution of 4 tablespoons of Seachem Prime per cup of water.\u003c\/li\u003e\n\n\u003cli\u003e Rinse thoroughly. The original color and activity are restored.\u003c\/li\u003e\n\n\u003cli\u003e Do not reuse if a chlorine odor is detectable — test with a chlorine test kit if in doubt\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch2\u003e Manufacturer's precautions\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Some amine-based protective coating products can permanently clog the Purigen and make regeneration difficult.\u003c\/li\u003e\n\n \u003cli\u003eSeachem Prime, Safe, and StressGuard are NOT amine-based and are compatible with Purigen.\u003c\/li\u003e\n\n\u003cli\u003e Store the Purigen in a little water between uses to prevent the beads from drying out and cracking.\u003c\/li\u003e\n\n\u003cli\u003e Purigen does not affect general hardness (GH) or calcium\/magnesium levels.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch2\u003e Available formats\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e 100 ml (sachet)\u003c\/li\u003e\n\n\u003cli\u003e 250 ml\u003c\/li\u003e\n\n\u003cli\u003e 500 ml\u003c\/li\u003e\n\n\u003cli\u003e 1 L\u003c\/li\u003e\n\n\u003cli\u003e 2 L\u003c\/li\u003e\n\n\u003cli\u003e 4 L\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch2\u003e Why choose Purigen from ReefSolution?\u003c\/h2\u003e\n\n\u003cp\u003e The 250 ml size is the standard for medium-sized reef aquariums. For optimal chemical filtration, combine Seachem Purigen with Seachem The Bag as a filter bag and Seachem MatrixCarbon to extend its lifespan. Use Seachem Prime during regeneration. For high nitrate levels despite the use of Purigen, add Seachem Matrix as a denitrification biomedia.\u003c\/p\u003e\n\n\n\u003ch2\u003e Frequently Asked Questions\u003c\/h2\u003e\n\n\n\u003ch3\u003e How long does a 250ml bottle of Purigen last?\u003c\/h3\u003e\n\n \u003cp\u003eThe 250 ml bottle treats up to 1000 L (250 US gallons) for a maximum of six months. The actual duration depends on the organic load of the aquarium. A color change from pale blonde to dark brown visually indicates depletion.\u003c\/p\u003e\n\n\n\u003ch3\u003e Is Purigen compatible with activated charcoal?\u003c\/h3\u003e\n\n\u003cp\u003e Yes. The two are compatible and complementary. Using activated charcoal with Purigen extends the lifespan of Purigen. However, Purigen is superior to charcoal for removing nitrogenous organic matter.\u003c\/p\u003e\n\n\n\u003ch3\u003e Which products are incompatible with Purigen?\u003c\/h3\u003e\n\n\u003cp\u003e Amine-based protective coating products can clog the Purigen and prevent regeneration. Seachem products (Prime, Safe, StressGuard) are amine-free and fully compatible.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 ml sachet","offer_id":47583866028203,"sku":"19179","price":16.99,"currency_code":"CAD","in_stock":true},{"title":"250 ml","offer_id":38010075611307,"sku":"19180","price":27.99,"currency_code":"CAD","in_stock":true},{"title":"500 ml","offer_id":47583866060971,"sku":"22331","price":52.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/7108\/1899\/files\/5-452950.jpg?v=1773610332","url":"https:\/\/reefsolution.com\/en\/products\/seachem-purigen","provider":"Reef Solution","version":"1.0","type":"link"}