Pool & spa care guides
Clear, step-by-step fixes for the problems that actually happen, answer-first, with the exact dosing linked from each guide.
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Why is my pool green (and how to fix it fast)
A green pool is almost always an algae bloom caused by too little chlorine. The fix is a big, sustained dose of chlorine…
How to clear cloudy pool water
Cloudy water usually comes from one of three things: not enough chlorine, high pH or alkalinity, or a filter that needs …
Why your pool won’t hold chlorine
If chlorine disappears, you usually have one of three problems: no stabilizer (CYA), so sunlight burns it off; an algae …
How to lower your pool’s pH
High pH stings eyes, reduces chlorine efficiency, and can cloud water. Lower it with muriatic acid (or dry acid). The am…
Pool chemical dosage chart
Every dose you are likely to need, in one place, in both unit systems. The tables below are per 10,000 gallons and per 1…
Pool chemicals explained
The pool aisle sells about thirty products that do roughly eight jobs. Here is what each chemical actually is, when you …
How to raise your pool’s pH
Low pH is corrosive: it eats heater cores, etches plaster, and irritates eyes. Which product you use depends on your alk…
How to lower cyanuric acid (CYA)
Nothing you can pour in removes cyanuric acid. The only reliable fix is dilution: replace part of your water with fresh.…
Saltwater pool maintenance
A saltwater pool is a chlorine pool. The generator makes chlorine from salt instead of you pouring it, so the chemistry …
Pool scale, etching & water balance (LSI)
Crusty scale means your water balance (LSI) is too high; rough, etched plaster means it’s too low. The Langelier Saturat…
Salt cell not producing chlorine?
A salt generator needs three things to make chlorine: the right salt level, a clean cell, and water that’s warm enough. …
How to open your pool for the season
Opening a pool is mechanical first, then chemical: clean and remove the cover, reconnect and prime the equipment, top of…
How to close and winterize your pool
Closing a pool protects it from freeze damage and makes spring easy. Balance the water, lower the level, drain and blow …
Pool chemistry 101 (glossary)
Plain-English definitions: pH, alkalinity, CYA, free vs combined chlorine, LSI, and more.
Green pool rescue
The weekend plan for a green pool, with the exact doses at each step…