I am hoping that someone can help me figure out why I cannot seem to get my alkalinity down to the recommended level (80 to 120)
My pool is a 10000 gallon, I am running a Hayward DE filter. My pump runs for 3 hours at 90% and 2.5 hours at 30%. I run a liquid chlorinator to add my liquid chlorine. My pool is in the sun from about 10 am until the sun goes down.
I was able to get my Alkalinity down some but just wont stay there. Originally it was at 220 ppm and I added muriatic acid to lower it. I was able to get it lowered to 160 ppm last night but tonight when I checked it is now back up to 190 ppm. Nothing has been added except my liquid chlorine.
My test results are as followed.
Chlorine - 5 ppm
PH - between 7.8 and 8.2 think it is closer to 8.2 but hard to tell.
Calcium - yes present
Hardness - 300 pp
Alkalinity - 190 ppm
CYA - 50