Weekly the filter should be rinsed with a garden hose and then put back into the hot tub. Monthly the filter needs a chemical cleaning. These are general guidelines and may change depending on usage. If this is done regularly your filter should last about 2 years.
Remove the cartridge;
Rinse with a garden hose to remove loose debris. A hose-end nozzle is best – a pressure washer has too much pressure. (Note: this will not eliminate the accumulated oils);
Every time you clean your filter, use SpaGuard Filter Brite according to label instructions; allow to soak in bucket for 8-12 hours.
Thoroughly rinse the cartridge again. (Ideally, the cartridge should be allowed to dry before being returned to service);
Return the cleaned cartridge to the filter housing;
Replace the filter element as often as the manufacturer or SpaGuard Dealer recommends;
Use SpaGuard Polysheen weekly.
While sand filters should be regularly backwashed they can also be cleaned using a larger bag of Filter Brite or another filter cleaning agent. Mix the contents in a pail of water and add through the pump or skimmer basket. When the solution enters the sand filter turn the pump off for 8 – 12 hours to allow the solution to soak in the sand. This will eat away at any greases, oils, chemical build up and help to rejuvenate the sand. After the 8 – 12 hour period start the pump with the filter on ‘Backwash’. After a thorough backwash, do a brief rinse cycle and then put the sand filter back to filter mode. For further details see the directions on the Filter Brite label.