Summer Smiles Spa Drain Ultra

Summer Smiles Spa Drain Ultra is a pre-drain pipe cleaner and descaler in one. Where most purge products target only the organic side — biofilm, oils, residue — Spa Drain Ultra also dissolves the calcium buildup that hard water leaves inside hot tub plumbing. In southwestern Ontario's hard water, that second front matters.

What it does: eliminates organic matter deposits from the lines, and removes and dissolves the calcium scale that narrows pipes, coats heater internals, and shelters bacteria.

How to use it: add it to the spa water before a planned drain, run the jets per the label directions so the cleaner reaches every line, then drain, wipe down the shell, and refill fresh.

Which purge product do I want? Fresh Start and Ahh-Some lead on biofilm; Spa Drain Ultra adds the descaling action — the right pick if your strips read high calcium or you can see scale at the waterline. Any of them beats draining without a purge.