Pool and spa owners should make sure their drains and drain covers are in good shape and securely anchored. If you are unsure, call a professional to check. Some pools have standard safe dome-shaped drain outlets with small holes on the sides. In terms of hot tub drain fittings, the safety commission recommends two drain outlets per pump. This reduces suction pressure of single outlets.
Some states require the two-drain system.
Florida does not. Ron Kessel, owner of Crystal Kool Pools in Marion County, also said a two-drain system can be installed to work so that, if one drain gets clogged, it will shut down and switch suction to the other, unclogged drain. Experts also recommend knowing exactly where the pump's cutoff switch is for quick emergency access. Those installing pools and hot tubs may want to have the pump switch very close to the swimming area. If something is blocking the drain, suction will increase to try to get water past the obstruction.