Prodibio BioTrace 30 Supplement for Aquariums provides the micronutrients required by the BioDigest bacteria to optimally purify fresh water and improve water quality. The BioTrace also contains trace elements such as sulphur for proteins, iron for plants and fish blood, cobalt for B vitamins, calcium, magnesium, manganese, zinc, molybdenum, and potassium, which help to maintain the cellular metabolism of the majority of bacteria found in freshwater aquariums. The BioTrace hastens the digestion of organic matter and aids in the elimination of nitrates and phosphates.