Azoo Plus Triple Black Water replicates the natural habitat of Amazon black water, making it ideal for discus, South American cichlids, and other fish who thrive in acidic water. Improved formula is three times more concentrated than before. Contains natural extracts including: humic acids, tannin, trace elements, vitamins, acids, fulvic acids, peat and almond leaves. Instantly converts tap water to “black water”. Effectively reduces stress and enhances fish coloration. Inhibits the growth of pathogens and significantly strengthens the immune system against diseases. Effectively improves breeding and hatching rate in discus and cichlids. It also inhibits the growth of algae and improves aquatic plant growth.