What is total alkalinity?
Total alkalinity (TA) measures the concentration of bicarbonates, carbonates, and other alkaline compounds in pool water. Its main practical role is stabilizing pH: water with low TA tends…
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Knowledge center
Practical guides to pool operation, equipment selection and common water problems.
What is calcium hardness?
Calcium hardness (CH) reflects the concentration of dissolved calcium in pool water. Water with too little calcium hardness can become aggressive toward plaster, grout, and metal fittings, drawing…
Read the guideWhat is cyanuric acid?
Cyanuric acid (CYA), often called ‘stabilizer’ or ‘conditioner,’ protects free chlorine from rapid breakdown under UV/sunlight exposure — without it, outdoor pools would lose chlorine within a few…
Read the guideSand Filter vs Cartridge Filter
Sand and cartridge filters are the two most common pool filtration types. Neither is universally ‘better’ — the right choice depends on your pool’s flow rate, maintenance preferences,…
Read the guideOverflow Pool vs Skimmer Pool
The choice between an overflow (infinity/deck-level) pool and a skimmer pool affects construction complexity, mechanical system size, and long-term maintenance — not just visual style.
Read the guideWhy Is My Pool Water Cloudy?
Pool water looks hazy or cloudy instead of clear, without necessarily being green.
Read the guideWhy Does Pool Water Turn Green?
Pool water has turned visibly green, ranging from a light tint to fully opaque.
Read the guidePool Is Green Even Though Chlorine Is High
Chlorine test reads high or normal, but the water remains green.
Read the guideWhy Does Pool Water Smell Strongly of Chlorine?
A sharp, strong chlorine-like smell, often stronger than the actual measured chlorine level would suggest.
Read the guideWhy Are Pool Walls Slippery?
Pool wall surfaces feel slick or slimy to the touch, even when the water still looks clear.
Read the guideWhy Is Pool Water Losing Clarity?
Water clarity has been slowly declining over several days rather than changing suddenly.
Read the guideWhy Does Pool Water Become Milky After Adding Chemicals?
Water turns visibly milky or white-cloudy shortly after adding a pool chemical.
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