<p>250GM Automatic pH buffer and alkalinity or carbonate hardness (KH) adjusting system designed for African cichlids and other rift lake fishes&#046; Also works well for many American cichlids whose native waters have high pH&#039;s of above 7&#046;8&#046; Provides a stable pH environment&#046; Dissolves instantly with little or no precipitation&#046; Compatible with and designed for use with A F Cichlid Chemistry and A F Cichlid Rift Lake Trace Elements by Kent Marine&#046; Free of polluting nitrates, phosphates, and organic chemicals! Does not contain silicates which can encourage ugly diatom growth, like competing products do!</p><ul></ul>