Buffering agent great for conditioning freshwater planted aquariumsUse Acid and Alkaline Buffer together to achieve optimum aquarium pHMaintain stable aquarium pH levels for healthy aquarium inhabitantsAcid Buffer This phosphate-free buffer lowers and stabilizes pH in the acid range of 4.0 to 6.8. Designed specially for freshwater and planted aquariums, but may also be used to lower the pH in saltwater aquariums. 300 grams treats approximately 3,000 gallons.Alkaline Buffer This phosphate-free buffer raises and stabilizes pH in the alkaline range of 7.4 to 8.4. Designed for freshwater and planted aquariums. Will safely raise pH with little danger of pH shock. 300 grams treats approximately 420 gallons. Use 7 grams (1 level teaspoon) for every 10 gallons daily until desired pH is reached.Please click on "More Information" for recommended dosing.

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