Check the listing for details. AF Pro Bio S Probiotic Bacteria (50 ml) - Aquaforest. Condition: New. Listed at 28.59 USD. Highly concentrated probiotic bacteria. Supplement contains several specially selected bacteria strains. Key function is to transform phosphate and nitrates to a biomass which can be easily removed by the skimmer or consumed by corals, sponges, clams and other organisms. Bacteria will significantly reduce organic sediment accumulating in the substrate & aquascaping elements. To achieve better results it’s recommended to place in the sump an additional bacteria medium like Life Bio Fil or sand. Pro Bio S protects your tank against pathogenic organisms. Recommended to use in conjunction with – NP Pro or Pro Bio F Dosage: 1 drop per 100 litres (27 US gal.) daily. Shake well before use. Once opened store it in the fridge – If temperature in Your room is not higher then 24 Celsius degrees – You can keep it at room temp, not in fridge. Capacity: bottle of 10ml( 0.35 fl.oz.), 50ml( 1.7 fl.oz.). Listing and template services provided by inkFrog