API pH Down Carded 37ml pH DOWN lowers pH to make freshwater aquariums more acidic for fish and plants Benefits: Lowers aquarium pH Follow API Easy Care Guide and use pH DOWN when: Addressing Water Problem Solving issues pH is the measure...

API PH Down 118ml  pH is the measure of acidity of water, on a scale ranging from 0 to 14. A pH of 0 is the most acidic, while a pH of 14 is the most alkaline. Different geographies have different tap water conditions with different pH...

API PH Down 473ml  pH DOWN lowers pH to make freshwater aquariums more acidic for fish and plants Benefits: Lowers aquarium pH Follow API Easy Care Guide and use pH DOWN when: Addressing Water Problem Solving issues pH is the measure...