Aquavail guides
AI Pool Chemistry
Why Is My Hot Tub Water Cloudy? Causes and Fixes
Cloudy hot tub water usually means unbalanced water, low sanitizer, a dirty filter, or a buildup of oils. Here's how to find the cause and clear it up.
How Much Chlorine to Add to a Hot Tub
How much chlorine a hot tub needs depends on its volume and your current reading. Here are the ideal ranges and how to dose without overshooting.
How to Lower pH in a Hot Tub
High pH makes a hot tub cloudy, scaly, and harder to sanitize. Here's how to bring pH down safely — and why alkalinity is part of the picture.
Total Alkalinity Too High: How to Lower It
High total alkalinity makes pH stubborn and water cloudy. Here's how to lower alkalinity with acid and aeration — and the order to do it in.
How to Shock a Hot Tub
Shocking a hot tub clears combined chlorine, odors, and organic buildup. Here's when to shock, which shock to use, and how to do it safely.
Why Is My Hot Tub Foaming? Causes and Fixes
Hot tub foam comes from oils, lotions, and detergent residue building up in the water. Here's the real fix versus the quick patch.
Ideal Pool and Hot Tub Water Chemistry Levels
A plain-English chart of the ideal water chemistry levels for hot tubs and pools — free chlorine, pH, alkalinity, calcium hardness, and stabilizer — and the order to balance them.
How Often Should You Change Hot Tub Water?
Most hot tubs need fresh water every 3–4 months — sooner with heavy use. Here's the simple rule of thumb and how to drain and refill.
Bromine vs. Chlorine for a Hot Tub: Which Is Better?
Bromine is more stable in hot water and gentler; chlorine is cheaper and faster. Here's how they compare and which to choose for your hot tub.
Why Is My Hot Tub Water Green?
Green hot tub water usually means low sanitizer (algae) or dissolved metals. Here's how to tell them apart and clear it up.
Hot Tub Calcium Hardness: Too High or Too Low
Calcium hardness that's too high scales and clouds a hot tub; too low corrodes and foams. Here's the ideal range and how to fix both.
How to Keep Cold Plunge Water Clean
Cold water slows bacteria but doesn't stop it. Here's how to sanitize, filter, and maintain a cold plunge so the water stays clean.
How Much Chlorine to Add to a Pool
How much chlorine a pool needs depends on its volume, your current reading, and the product. Here are the ideal levels and how to dose without overshooting.
Why Is My Pool Water Cloudy? Causes and Fixes
Cloudy pool water usually means unbalanced water, low chlorine, poor filtration, or high stabilizer. Here's how to find the cause and clear it.
How to Lower pH in a Pool
High pool pH causes scale, cloudiness, and weak chlorine. Here's how to lower it with acid — and why alkalinity is part of the fix.
Green Pool Water: How to Clear It
Green pool water is almost always algae from low chlorine — sometimes metals. Here's how to tell them apart and clear a green pool.
How to Shock a Pool
Shocking a pool clears combined chlorine, algae, and contaminants. Here's when to shock, which shock to use, and how to do it safely.
Cyanuric Acid (Pool Stabilizer): What It Is and How to Lower It
Cyanuric acid protects pool chlorine from the sun — but too much weakens it. Here's what CYA does, the ideal level, and how to lower it.
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