To clean your filters turn the spa off, remove the filter face and unscrew the filters. Spray the filter off if it has any visible debris and then place it in a bucket with a filter cleaner. Ideally let it soak over night, then rinse well with an adjustable spray nozzle. If you have a spare set of filters you can use one set whilst soaking the other set and not have any time without filters in your spa.
Please Note: This video is based on a overnight filter soak system, it is recommended to check with your local spa shop for soaking timeframes as they vary from product to product.