Once you’ve finished the purge process, shut off your hot tub. Drain the water from your hot tub, following the directions in your hot tub owner’s manual. You can always ask your retailer for help.
While the water is draining, clean the hot tub filter – follow directions on the product you use to clean it; most call for a 24-hour soak.
Or replace the hot tub filter cartridge to ensure that bacteria is not hiding deep in the pleats of the spa filter.
Use a submersible pump (sump pump), placed in the deepest part of the hot tub. Plug it in and turn it on. Turn it off when the water is drained – if it runs dry the motor can burn.
Use a wet/dry vacuum or spa wand to drain any remaining water.