Concentrated Filter & Cartridge Cleaner - Essential in maintaining a clean & healthy filtration system for either pools or spas.\nDirections For Use:\nSand FiltersBackwash the Filter, drain & isolate filter, replace drain bung to allow the filter to be re-filled with the cleaning agent. If possible remove filter lid to allow easy application of agent.Add at a rate as follows:18″ Diameter filters - add 250ml24″ Diameter filters - add 500ml30″ Diameter filters - add 750ml36″ Diameter filters - add 1000mlThen fill filter with water and allow to soak for at least 6 hours or 12 hours overnight for optimal performance. Replace lid & ensure filter is ready to backwash.Backwash & rinse filter for a minimum of 2 minutes prior to returning the filter to service.\nCartridge Filters Remove cartridge and other screens from the unit and flush debris from filter body & cartridge screens etc. Soak overnight the cartridge in a 5% solution of the cleaner. Rinse thoroughly, allow to dry and clean with a soft brush, reassemble the filter unit & return to service.\nGeneral Precautions:· Never mix with any other chemicals including cleaning products, weedkillers and chlorine products, as a dangerous reaction may occur.\nHandling/Storage:· Handle products in a well-ventilated area, preferably outdoors.· Wash hands after use.· Ensure chemicals do not become damp in storage - store in a cool dry place.· Ensure all product safety warnings issued on the container are followedStock note: In an effort to provide the quickest possible delivery for our customers we may ship an alternative premium branded product if stocks are low.  These brands will only be Swim Fresh, Deep Blue Pro or Relax, all established fo