MicrobeLift THERA-P- 1 Gallon . Natural bacteria specially formulated for promoting fish health. Biologically supports a healthy immune system; improves dissolved oxyge levels; digests organic droppings; promaotes rapid fish growth; increases resistance to pathogens and parasites. For 500- 1000 gallon pond, use 8 ox. initially; then 5 oz. weekly for 4 weeks, then monthly maintenance dose of 5 oz. Provides a natural pond eco-system, resulting in better over-all fish health and improved water quality. Microbe-Lift® TheraP provides a natural pond eco-system, resulting in better overall fish health and improved water quality. For use with all ornamental, coldwater, temperate, cyprinids, native and wild species. Natural, Safe and Beneficial Bacteria. Specially formulated for promoting fish health. Biologically supports a healthy immune system. Reduces environmental stress. Improves dissolved oxygen levels. Digests fish waste. Promotes rapid fish growth. Increases resistance to pathogens and parasites. Aids respiration and gas exchange. Contains both Nitrosomonas and Nitrobacter bacteria. Oxidizes both ammonia and nitrites, reduces nitrates. Beneficial when overpopulation exists. Seeds and maintains biological filters