Achieve ideal general hardness level in your freshwater aquarium. API Water Softener Pillow effectively reduces GH (general hardness) by lowering calcium and magnesium. Helps protect sensitive soft water tropical fish from hard water. Also eliminates white, crusty mineral deposits on aquarium surfaces. Great for planted aquariums and aquariums housing angelfish, neon tetras, South American cichlids or any freshwater fish from soft water environments. Rechargeable resin may be successfully used multiple times to replicates natural, soft water conditions in the home aquarium. Safe for delicate tropical fish.
Small ready-to-use pouch is for aquariums up to 20 gallons.