Troubleshooting
Why is my hot tub water green, and how to fix it
Green water means the sanitizer dropped and algae moved in. Here is why it happens so fast, how to clear it, and how to stop it coming back.
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Spa and pool water, sorted.
Short, plain guides to the water problems every owner runs into, and exactly what to add to fix each one.
Troubleshooting
Cloudy spa water: the usual causes and the fix
Cloudy water is the water telling you a number has drifted. Here are the three usual causes, the ranges to aim for, and how to get back to clear.
ReadWater chemistry
Spa pH too low: what it means and what to add
Low pH means acidic water that stings skin and corrodes your heater. Here is what it does, what to add to raise it, and how to keep it steady.
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