Good afternoon! For background, I recently purchased a house with an existing in-ground pool. In my last post a couple weeks ago, you guys helped me understand and operate all the pool equipment. My TF-100 test kit just came in and I ran through the battery of tests. Here are the results:
No visual problems with the water, it looks great.
pH > 8.2
FC = 1.5 ppm
CC = 0 ppm
CH = 650 ppm
TA = 180
CYA = 80-90 ppm, probably closer to 90
Temp is cold, probably 45-50.
It looks like the real concern is that the CYA is well above the recommended range and there is no good way to lower it without draining and replacing some of the water. Everything else will need to be re-tested and balanced after that point anyway. I don't relish the idea of draining and re-filling. Is it possible or advisable to limp along with a CYA of 90? My understanding is that I'd have to maintain a pretty high FC. Any tips on draining are welcome too.
No visual problems with the water, it looks great.
pH > 8.2
FC = 1.5 ppm
CC = 0 ppm
CH = 650 ppm
TA = 180
CYA = 80-90 ppm, probably closer to 90
Temp is cold, probably 45-50.
It looks like the real concern is that the CYA is well above the recommended range and there is no good way to lower it without draining and replacing some of the water. Everything else will need to be re-tested and balanced after that point anyway. I don't relish the idea of draining and re-filling. Is it possible or advisable to limp along with a CYA of 90? My understanding is that I'd have to maintain a pretty high FC. Any tips on draining are welcome too.