I just bought a place with a nice 11000 gallon plaster pool. It's all clear and looks good with the exception of two things:
- Calcium scaling around the top tile
- I'm trying to use bleach, but it basically reads zero the next day.
So I did just get a TF-100 kit and did my chemistry:
PH = 7.8
FC = Assume zero (no yellow that i can see)
CC = Can you test this when FC is zero?
TC = Assume zero?
CH = 41drops x 25 = 1025 ( Really high right!)
TA = 80
CYA = 90~100 (seems like if you wait a little you can see the dot again?)
Based on this, i went to pool math and it seems to be telling me i have to replace between 44% to 75% of my pool water depending on if i'm looking at lowering CYA or CH numbers. Is that the only option?
I do think the previous owner tended to just put pucks in and shock very regularly.....
Any advice is appreciated.