pH Up or pH Down pH Down 1 pint

Fast-acting, colorless pH adjusters that will not cloud water. pH Up raises the pH of your aquarium, making water more alkaline. Great for African Cichlid aquariums and for freshwater tropical fish that prefer hight pH conditions. pH Down lowers pH making water more acidic. Great for freshwater tropical fish and plants that prefer lower pH conditions. pH Up use 1/2 teaspoon per 10 gallons. pH Down, use 1/2 teaspoon per 20 gallons. 1 pint. For freshwater aquarium use.