Aquarium Filter Wool, Filtration Resin with Mesh Bag, 250g Water Purifying Resin Removes Driftwood Tannins for Freshwater Saltwater Fish Tank 

• Filtration resin for aquarium: Effectively removes tannins and waste from driftwood, eliminating yellow water and keeping your tank crystal clear.
• Macroporous adsorption technology: Spherical resin with microscopic pores provides high surface area for superior absorption of impurities, outperforming standard filtration media.
• Reusable and regenerable design: When saturated, the resin changes from light yellow to dark brown; simply soak in high-concentration salt water for 12 hours to restore and reuse.
• Convenient mesh bag included: Comes with a fine mesh bag that prevents leakage and makes placement easy in any filter system – canister, hang-on-back, sump, or top filter.
• Safe for all aquatic environments: Suitable for both freshwater and saltwater tanks, compatible with fish, corals, and plants without affecting water parameters.

This 250g filtration resin is specially formulated to remove tannins and compounds from aquarium water, effectively clearing yellow discoloration caused by driftwood and other natural materials. The macroporous spherical structure provides an extensive contact surface area, enabling efficient adsorption of impurities that cloud your tank. The resin is easy to use – simply rinse for one minute, place it in the included mesh bag, and position it in your filter system. As it adsorbs waste, its color gradually changes from light yellow to dark brown. When fully saturated, it can be regenerated by soaking in high-concentration salt water for 12 hours, restoring its filtration capacity for continued use. Suitable for both freshwater and saltwater aquariums, this filter media is safe for fish, corals, and plants. It works with various filtration setups including canister filters, hang-on-back filters, sumps, and top filters. Each pack contains 250g of resin and a durable mesh bag, providing an effective and economical solution for maintaining pristine water quality.