AquaLabs KH Plus is a specialized water conditioner crafted to elevate the carbonate hardness (KH) of aquarium water. Appropriate KH levels are vital for the long-term health and reproductive capacity of fish, shrimp and snails. Plants may also utilise carbonates where there is a lack of additional Co2 Injection. The required degrees of carbonate hardness (dKH) are ultimately determined by the inhabitants of the aquarium and should be considered before using the product.