Fi-Clor Spa Cartridge Cleaner enables you to chemically clean the hot tub filter. Grease, oil and trapped debris are removed, thus restoring the filter to optimum efficiency. 1 Litre. Instructions Periodically remove the cartridge filter, especially when water in the spa is being replaced. Using fresh water, rinse off any particles clinging to the surface of the filter. Do not use a preessure washer as this may damage the cartridge. Use 0.5 litre of Fi-Clor Spa cartridge cleaner per 10 litres of water. Add the product to the water in a clean plastic bucket large enough to cover the filter when full. Place the filter in the solution overnight. Remove the filter, rinse off with fresh water and allow to dry before replacing. It is good practise to have a spare clean filter available which can be used while the dirty one is being cleaned.
