Orca Phosphate Aquarium Filter Pad.

Carbon Sponge: Reduces unwanted dissolved waste and odours in Aquarium.Nitrate Sponge :Reduces nitrate level to prevent algae blooms and fish disease.Phosphate Sponge :Reduces phosphate to prevent algae growth.Ammonia Sponge :Help reduce ammonia levels by removing free floating waste and debris before pollutants can break down into toxins.