" data-description="API pH DOWN pH adjuster lowers pH to make freshwater aquariums more acidic for fish and plants when levels rise too high. pH is the measure of acidic or alkaline conditions in water. Different fish need different pH levels to be healthy. Test your water regularly to ensure pH levels are correct for your aquarium. This is fast acting, colourless, easy to use and will not cloud your aquarium. Because it is phosphate-free and nitrate-free , it will not encourage algae growth. A useful tool below:
