About poolcntrl
What we have checked about our numbers, what we have not, and how many real pools that checking rests on.
We hold no paired readings from real pools yet.
We state no accuracy claim until a measurement has at least 8 paired readings for one method, and none has yet. So this page makes no claim about how accurate poolcntrl is on real pools.
A paired reading is one sample of pool water tested two ways at the same time: once with a drop kit, a pool store or a lab, and once with the method being checked.
The amounts come from fixed formulas, not from AI. The same readings, volume and product always give the same amount, and the formulas are written out on the page about where our numbers come from.
We run the engine on a set of made-up test pools and compare its amounts with an independent calculation of the same thing. That catches arithmetic mistakes. It says nothing about how well a real reading describes real water.
Every amount is only as good as the numbers typed in. We have not yet measured, on real pools, how far a strip or our strip scanner drifts from a drop kit. That is what the count above is for.
Every amount scales with the gallons. If the volume is a fifth too high, every amount is a fifth too high.
Reading a test strip from a photo is new, and strips are less precise than a drop kit even when the scan is perfect.
Reading a pool from a photo is new. It is a second opinion on what you can already see, never a substitute for a test.
The formulas themselves are on where our numbers come from, and you can put your own readings through the same engine on the free calculator.
