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Kordon EZ4U Tablets make water changes less laborious and easier than ever! Each tablet in the 1-gallon size removes harmful chemicals like ammonia and chlorine from one gallon of water, the perfect size for water changes on small aquariums. The tabs also add beneficial electrolytes and conditioners into the water to help keep your fish healthy!
For initial aquarium set-up: Add 1 green tab directly to the aquarium for each 1 gallon of water. For water changes: Add 1 green tab for each gallon of new water