NT Labs Koi Care Filter Bugs Pond Treatment\nNT Labs Koi Care Filter Bugs is an easy-to use liquid formulation, containing a blend of Nitrosomonas, Nitrobacter, Nitrospira and supporting bacterial cultures. These bacteria will populate your filter with nitrifying organisms to ensure efficient biological filtration and perfect, stable water quality. Add NT Labs Koi Care Filter Bugs to new ponds to kick start the biological filtration process and regularly to existing ponds and filters to give an added boost to the bacteria which keep the pond healthy and safe for your fish. Filter Bugs are especially useful when ammonia is present for emergency boosting of the filtration system. NT Labs Koi Care Filter Bugs Dose Rates:- NT Labs Koi Care Filter Bugs 250ml - Treats 9000 litres / 2000 gallons- NT Labs Koi Care Filter Bugs 500ml - Treats 18000 litres / 4000 gallons- NT Labs Koi Care Filter Bugs 1 Litre - Treats 36000 litres / 8000 gallons- NT Labs Koi Care Filter Bugs 2.5 Litre - Treats 9y