pH UP™ API® pH UP pH adjuster raises pH levels in your aquarium and or Aquaponics kits to make water more alkaline when levels fall too low. pH is the measure of acidic or alkaline conditions in water, where a value of 7.0 corresponds to a neutral pH, pH values about 7.0 are considered alkaline, and pH values below 7.0 are considered acidic. Aquaponics requires a compromise of about 6.5

pH Up- API