Buffer Powder for all East African Cichlid Aquaria Overview Alkalinity-increasing (”buffer”) powdered blend formulated specifically for maintaining pH-stability in Rift Lake biotope aquaria and other systems housing fishes and plants endemic to environments with an alkaline pH. Not a re-packaged marine aquarium buffer. Helps increase pH stability in an aquarium by raising the alkalinity; continued addition raises pH to a range of 7.9 - 8.3. Formulated by a marine scientist.