"Why Does My Hot Tub Smell?" is a question many hot tub owners find themselves asking. Unpleasant odors from your spa are not just a nuisance; they signal underlying issues. Whether it's a musty, chemical, or rotten smell, each type hints at different problems.

Various factors can contribute to this common issue, from improper chemical balance to bacteria build-up. This article aims to uncover the reasons behind smelly hot tub water and offers practical solutions. Understanding what causes these odors is the first step to enjoying a fresh and inviting spa experience once again.

1. Your water chemistry is off: either the pH level is too high or too low, or the sanitizer or hot tub chemicals are not right.

2. There is biofilm in your spawater.

3. Sediment or bacteria built up in your hot tub cover, filter, or pipes.  

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