Brightwell Aquatics Florin Delta KH+ 500 g.Increases Carbonate Hardness in all Freshwater and Planted AquaruaIncreases alkalinity (a.k.a. carbonate hardness or buffering capacity) infreshwater aquaria with a target pH of 7.8 or less.Improves stability of pH.Safe for use in all freshwater community and planted aquaria.Composed of USP-grade ingredients.Contains no phosphate-based buffering agents.For complete information, click the ‘Technical’ button at the top right.Product code: 8510Item No. PT-BA-FDKH500