How To Drain A Hot Tub Fast. For the first method, use a submersible pump. Ensure that the hose is long enough to reach an area where it’s safe to dump wastewater.
This will allow any residue from the drain prep or tub cleanse to be fully flushed out of the tub. Attach a garden hose to the sump pump. Turn off the hose, disconnect it from the faucet, and keep it low to the ground.
These usually can be connected to a much thicker hose than a standard garden hose and will pump out the water very fast.
Next, turn off the circuit breaker for the spa’s electrical line,. The first step to drain and refill your spa. Let the tub drain, either partially or fully. Add 1 bottle of dazzle drain prep to clean the hot tub plumbing.