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Crystalpro Purisen is a porous filtration resin that polishes aquarium water by absorbing dissolved organic waste, fish waste and food residue that yellow the water. It works in freshwater and saltwater and is sold pre-packed in a mesh bag for high-flow filters. Unlike disposable carbon or resin pads, it can be regenerated with a chlorine-bleach solution and then dechlorinated and remineralized, so one batch is reused over time. It suits keepers who want clear water and lower nitrate buildup and are willing to do the regeneration routine.
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Lowest price we've seen: $9.99 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
Crystalpro Purisen is a porous filtration resin for aquarium water. It absorbs organic waste, fish waste and food residues that cause yellow discoloration. It can be used in both freshwater and saltwater tanks.
Purisen traps organic pollutants before they break down into toxic compounds, which helps lower nitrate levels and limits the nutrient spikes that fuel algae growth. It targets organic waste and leaves essential trace elements intact. A 100 ml portion treats up to 400 liters (approx. 105 gallons) of aquarium water.
The resin can be regenerated and reused. Regeneration uses a standard chlorine-bleach solution, followed by dechlorination and remineralization with Crystalpro Aqua Conditioner and salt.
