I am new to trouble free pool. I have been a pool owner now for 4 years. trying to learn more about maintaining my pool rather than relying on someone else. I had my water tested today and I am suspect about the results. before I had it tested I use 6 test strips to test myself. my results seemed fine. FC, TC, and alk seemed a little high. the results from my local pool store: FC: 5.5 TC: 5.5 CC: 0.0
PH: 7.5 Hardness: 260ppm Alkalinity (w/stabilizer correction) 0ppm CYA: 75ppm.
cant understand why I have a 0 alk when I my test strip actually showed a little high.
I shocked the pool on monday. and havnt had any 3" tabs since tuesday being that the chlorine seems high. curious to know why my chlorine levels are high and I havnt had any chlorine tabs in since tuesday. I have had problems this year keeping my chlorine level up. the pool store said it is because of the phosphates in my pool.
Pentair filter fnsp60 (I think?)