PH UP
 
API pH UP pH adjuster raises pH levels in your aquarium to make water more alkaline when levels drop too low. pH is the measure of the acidic or alkaline conditions of water, where a value of 7.0 corresponds to a neutral pH, pH values ​​around 7.0 are considered alkaline, and pH values ​​below 7, 0 are considered acids. Different fish need different pH levels to be healthy, so it's important to test your water regularly to make sure the pH levels fall where they should. pH UP pH adjuster is fast-acting, colorless, easy to use and does not cloud aquarium water. Because it does not contain phosphates or nitrates, pH UP pH adjuster will not encourage algae growth. sizes 1.25 oz., 4 oz., 16 oz.