Hi first time posting and have become quite desperate.
I have owned this pool for two years and have always had crystal clear water. Started with a DE filter and after getting fed up with the broken grates and DE in the pool I put in a Hayward c17502 cartridge filter last year.
The pool is 12,000 Gallons, Plaster, Hayward c17502 cartridge filter Pentair inline chlorine tab dispensing bio guard tabs.
So it all started about three weeks ago, we had some major rain for about a week strait and the water began to look cloudy. I was shocking it once a week and figured it was from the rain and shock but why wasn’t it clearing?
Took some water in and they told me I need to up the Alkalinity but all other numbers were spot on. Added the Balance pak 100 to their recommendations with no change.
The next week left out of town and told the wife to take a water sample in. She called me and told me it was looking more cloudy. Store told her the numbers were fine and there shouldn’t be any worry.
Ok, so came home to a green pool. Went to the pool store told them the pool was green and that I couldn’t see the bottom of the pool at all.
They took a reading on my water and here is what they found:
PH – 7.6
TA - 78
FC – 5.9
TC - 6
CYA – 80
I was told to add yet another balance pak for the Alk, wait an hour, add 1/8 gallon of Acid wait 15 then add 2 bags of shock wait 1 hour brush and then 1 hour later add 19 oz of banish algicide.
Did all of that on Saturday and have ran the pump constantly since. This morning awoke and still green water. When I swept there was only a light amount of green coming off of the step that I could see.
Took another sample in:
PH – 8.1
TA - 118
FC – 9.4
TC – 9.5
CH - 287
CYA – 80
Was told to add 6lbs of balance pak.
2.3 pts of Acid
1 bag of shock
Explained that my pool is still cloudy and green and they told me it should clear. Well that was this morning and I still see absolutely no change.
I have two cartridges so I am cleaning and swapping out about every three hours.
After reading on here I am thinking that my CYA is too high and this isn’t going to clear unless I drain some water, lower the PH and start again.
1) Should I drain some water to lower the CYA, get the PH down to 7.2 and start shocking?
2) Should I stop obsessing and give it some time? How long should this take to filter the green water?
3) Do i have a filter problem?
4) Any other advice would be much appreciated?
Pictures of pool below.
Thank you for this awesome web site!