KORDON® LLC introduces a group of pH Stabilizers in 4ounce bottles with emitter caps. Kordon pH 7.0,Kordon pH 7.5 and Kordon pH 8.2 are formulated to be used following pH adjustments using Kordon's pH Increase or pH Decrease. Using the new Kordon pH product line gives aquarists the best products possible to manage their aquarium's pH levels quickly and accurately. Depending on biological conditions, Kordon's pH Stabilizers will adjust and maintain aquarium water at the indicated levels for up to 60 days .