The Microbe-Lift Aquarium TheraP encourages the health of your fish, biological filters and aquarium while preventing pathogens and parasites by improving their underwater environment, free of chemicals. TheraP will begin and maintain symbiotic microbial populations while supporting the immune system of your fish, reducing stress, conducting a beneficial breeding environment and promoting fish growth. As dissolved oxygen levels are being improved, respiration and gas exchange is facilitated. This method will oxidize ammonia and nitrites while reducing nitrates and breaking down fish waste; thus, eliminating odors. Suitable for freshwater and saltwater aquariums; especially when overpopulation is present.