? EFFECTIVE FORMULA ? : Can be used weekly to control spikes in ammonia and nitrite. Use NT Labs Test Kits to monitor water quality. ? EASY TO USE ? : To work out the required dosage for your pond, simply calculate the volume of your pond in litres (length x width x depth (in cm)/1000) or alternatively, use our Online Dosage Calculator. Shake bottle well. Use double do se at start of season or when establishing a new pond/filter. Add the required dose directly into the filter, if present. ? VERSATILE APPLICATION ? : Alternatively, you can use Mature when adding new fish, after a filter or water change, or following the use of a disease treatment. ? KICK - START YOUR FILTER ? : Add Mature to your new pond/filter to help ‘kick - start’ the filter. These friendly filter bacteria break down fish waste, making the water safe for your fish. ? PACKED WITH BENEFICIAL FILTER BACTERIA ? : Live Filter Bacteri a (Mature) includes 7 key species of beneficial bacteria including Nitrosomonas spp., Nitrobacter spp., and Nitrospira spp. These bacteria will help effective biological filtration.