pH measures the acidity or alkalinity of water. A pH value of 7.0 indicates a neutral pH. Values above 7.0 are alkaline, while values below 7.0 are acidic. Different fish species require specific pH levels to thrive. Use a pH Test Kit to check the pH level. If it’s not at the desired level, adjust it with PROPER pH. Proper pH 7.0 sets and stabilizes the pH at 7.0, removes chlorine, and detoxifies heavy metals. It’s designed for community aquariums, containing electrolytes to reduce fish stress. Ideal for use during aquarium setup or water changes. Do not use in aquariums with live plants.