Seachem Purigen®

Premium synthetic organic filtration resin for freshwater and marine aquariums, designed to remove soluble and insoluble organic waste, control ammonia, nitrites, and nitrates, and polish water to unparalleled clarity.

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Key Features

• Highest organic removal capacity – removes nitrogenous waste faster and more completely than other products.
• Enhanced surface area – spherical and macroreticular beads provide far greater usable surface area than standard spherical resins.
• Color-change indicator – beads darken as they exhaust, signaling when regeneration is needed.
• Regenerable – fully restores adsorption capacity with a bleach-based procedure.
• Minimal impact on trace elements – preserves essential water chemistry.
• Raises redox potential, improving overall water quality.

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Advantages

Selectivity

• Specifically targets nitrogenous organics from fish, corals, and plants.
• Ignores simple elemental compounds, ensuring highly efficient organic removal.

Capacity

• Vast surface area from macro-porous beads allows 500% greater performance than competing resins.

Regeneration

• Exhausted Purigen® (dark brown/black) can be fully regenerated using bleach and dechlorinator solutions.
• Brine-based regeneration is ineffective for organic removal – Purigen® requires oxidation of organics.

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Sizes

• 100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L

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Directions for Use

1. Rinse before use.
2. Place in a fine mesh filter bag (≤180 micron) such as Seachem The Bag™.
3. Position in high-flow areas: canister filter, media chamber, box filter, or trickle filter.
4. Each 250 mL treats up to 1,000 L (250 US gallons) for up to 6 months.
5. Discoloration to dark brown/black indicates exhaustion.

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Regeneration Procedure

1. Soak in a 1:1 bleach:water solution for 24 hours in a non-metallic container in a well-ventilated area.
2. Rinse thoroughly, then soak 8 hours in a dechlorinator solution (4 tbsp Prime® per cup water).
3. Rinse well. For freshwater, optionally soak 4 hours in buffer solution (2 tbsp buffer per cup).
4. Confirm no detectable bleach or chlorine remains before reuse.

Caution: Some slime coat products can permanently foul beads. Do not reuse if bleach odor persists.