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We also now include a special 2 foam roller handle with pad and mini-tray for easier application to vertical and larger surfaces. How long will it take me to do? It takes about 45 minutes to prep a standard tub, and maybe an hour to properly apply the first coat. Then 4-5 hours of drying time and then a second coat.
Cleaning your hot tub. 1  Drain your spa water every 3 to 4 months, depending on use. If your spa has an ozonator, changing your spa water may only be necessary every 8 - 12 months. 2  Add 1/2 cup bleach to 3 gallons of water and sponge clean your spa shell. Rinse with fresh water and dry spa with large towels.