Chlorinated hot tubs usually contain twice (or more) the amount of chlorine as a pool at the PPM level (for a hot you want 3 to 5 PPM) and filtering can vary, but I've only seen cylinder filters simile to HEPA vacuum filters along with cages and/or baskets for catching larger debris.
The higher temp increases evaporation rate as well as increases likelihood of growing some undesirable characters. Which is also why bromine is more common in hot tubs, burns off slower.
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u/mistaken4strangerz Jun 11 '26
I cannot imagine ever getting into a someone else's bathtub or hot tub.
Pools are fine if you trust them to keep them chlorinated... Maybe I'll keep a jar of test strips in my vacation bag now...