13 playbooks
Chemistry Edge Cases
Source water, phosphates, borates, nitrates, ammonia, chloramines, CSI, scale, and unusual chemistry failure modes.
Chemical Effects Calculator
Estimate what raises or lowers FC, pH, TA, CH, CYA, salt, borates, and CSI pressure for common pool chemicals.
CSI Water Balance: Scale Risk and Stability
Understand CSI as the balance lens for scale and corrosion risk in outdoor residential pools.
Indoor vs Outdoor Pool Care
Adjust chemistry priorities for UV loss, debris, ventilation, humidity, and chloramine control based on where the pool lives.
Phosphates, Borates, Nitrates, Ammonia, and Chloramines
Use obscure chemistry readings as diagnosis context instead of letting one number drive unnecessary treatment.
Phosphates, Borates, Nitrates, Ammonia, Urea, and Chloramines
Treat phosphates, borates, nitrates, ammonia, urea, and chloramines as context, not a substitute for sanitizer or circulation.
Pool Chemical Dose Calculator
Calculate chlorine, CYA/stabilizer, salt, acid, alkalinity, and calcium doses from current and target readings before you add anything to the pool.
Pool Surfaces and Finish Care
Match stain, scale, startup, and calcium guidance to the actual surface instead of treating every pool like plaster.
Scale Prevention Routine
Use CSI, hotspot routing, and source-water or equipment follow-up to stop recurring scale on tile, heaters, and SWG cells.
Source Water and Refill Water
Test the water you are adding so recurring hardness, metals, and TDS problems stop feeling mysterious.
Source Water Pre-Treatment
Use hose-end filters, alternate fill sources, softened-water caveats, and repeat-fill strategy intentionally when refill water keeps reintroducing the same burden.
Supplemental Systems and Add-Ons
Understand the limits of UV, ozone, mineral, and similar add-ons so they do not displace basic sanitizer and testing discipline.
Water Exchange Calculator
Estimate how much water to replace when you need to lower CYA, calcium hardness, salt, or metals without guessing at the refill plan.
Well Water Recurring Treatment Decision Tree
Choose recurring treatment when a well keeps reintroducing hardness, metals, sulfur, or sediment and you cannot economically switch fill sources.
Educational guidance only. Verify labels, manuals, local code, and site conditions before acting. Stop for electrical, gas, structural, drain, drowning, injury, emergency, or chemical-mixing risk.