Pool & Spa Maintenance
in Oak Island, NC

For most chlorine pools: Free Chlorine 2-6 ppm (the correct target depends on CYA), pH 7.2-7.8, Total Alkalinity 60-90 ppm, Calcium Hardness 200-400 ppm, and Cyanuric Acid (stabilizer) 30-50 ppm. Key point: chlorine targets only make sense when paired with the stabilizer level. Low CYA with high sun burns chlorine off fast; high CYA requires a higher chlorine target.

Beach-area pools typically deal with more wind-driven debris (sand, pollen, salt spray), higher corrosion risk from salt air, more UV and weather swings causing faster sanitizer loss, and more algae pressure in season. This means coastal pools usually need tighter consistency in cleaning, filtration, and chemical control.

Weekly: Test and adjust FC and pH, empty skimmer and pump baskets, brush and skim, vacuum as needed, and do a quick equipment check. Monthly: Test and adjust TA, CH, and CYA, confirm salt level if saltwater, inspect filter condition, and check for early failure signals like air bubbles or recurring cloudiness.

Chlorine and pH are only the top layer. A pool can show 'good' chlorine and pH and still have problems caused by high CYA (over-stabilized water where chlorine becomes less effective), wrong TA/CH balance (causing cloudiness, scale, or corrosion), or filter/flow issues. Chlorine and pH are necessary checks, but not sufficient control.

Yes, if you want stable water and predictable chemical demand. CYA controls how much chlorine you actually need for sanitation. TA stabilizes pH. Too high drives scale and cloudy water, too low causes pH bounce. CH protects plaster surfaces and reduces corrosion risk. If you only test chlorine and pH, you will eventually get 'mystery problems' that are not mysterious at all.

'Shock' is not a fixed schedule. Use it when conditions justify it: after a heavy bather load, early algae signs, or storms. For most pools, maintaining proper daily FC for your CYA reduces the need to shock routinely. Swimming is generally OK when water is clear, FC is back in the normal target range, and pH is 7.2-7.8.

Common causes: bad testing (strips are often inaccurate), high CYA making chlorine less effective, filtration problems (dirty filter, channeling sand, torn cartridges, or too little runtime), fine particulates from storms or construction, or balance-driven precipitation from high pH/TA/CH. Cloudy water is usually a filtration and balance problem, not a 'just add more chlorine' problem.