Free Chlorine Low Total Chlorine Normal. Combined chlorine is the chlorine that’s bonded or attached to the stuff it worked on. However, if your free chlorine reading is different.
But a safe range is between 1 and 3 ppm. If organic chlorine (weekly chlorination) is used, cyanuric acid accumulates in the pool. However, if your free chlorine reading is different.
Difference between total chlorine and free chlorine.
The pool and hot tub alliance recommends keeping free chlorine levels between 2.0 and 4.0 parts per million (ppm). I have a 18 foot round pool and i seem to be having chlorine demand i test the water and i get no chlorine reading i took a sample to a local pool store and they said my total chlorine was at around a 3 and my free was at 0 my ph and alkalinity reading are fine my cya is a little high at 80 but it read that last year and didn’t have this problem i added powder chlorine and then. Fac + cac = tc for example, if your free chlorine (fac) levels and total chlorine (tc) levels are the same, then there’s no combined (or used chlorine) in your water and there’s no need to add any chemicals today. Total chlorine is the sum of free chlorine and combined chlorine.
