Hello!
I have a 15K-gal pool. I have only had it in for one year, and apparently messed up on the timing of getting the pool back into working condition (California weather). My CYA has been creeping up since the pool was installed and now its sitting at 100-110ppm. I plan to drain the pool about 50% to lower the CYA. My other issue is that I've accidentally allowed the algae to take off and now I have a green pool. Due to high CYA, and the fact that I'm going to need to drain the pool, I think my approach should be to drain the pool, refill, balance pH, then SLAM. This way I won't need to use copious amounts of chlorine to kill the algae. Once the water is replaced I hope that pH will drop, if not I think I should drop it to 7.4 or so prior to slamming. I'm hoping to get the CYA down to 40 or 50 (something manageable).
The pool is just colored green at this point (nothing major), but the filter hasn't been cleaned since fall. Should I clean the filter before I do all of this and is the above approach way that you all would suggest? I have the TF-100 test kit so I'm ready to do what is necessary.
Also, I have an inline chlorinator which I think is the culprit of the high CYA in the pool. It's adjustable but even when I dialed it back the CYA seemed to race out of control. It has been off since the end of summer and from the end of last year to now my CYA increased 10ppm. What is going on here? Thanks, everyone!
Temp=54F
Cl=0
pH=8.4
TA=110
CH=375
CYA=110
Borates=25
I have a 15K-gal pool. I have only had it in for one year, and apparently messed up on the timing of getting the pool back into working condition (California weather). My CYA has been creeping up since the pool was installed and now its sitting at 100-110ppm. I plan to drain the pool about 50% to lower the CYA. My other issue is that I've accidentally allowed the algae to take off and now I have a green pool. Due to high CYA, and the fact that I'm going to need to drain the pool, I think my approach should be to drain the pool, refill, balance pH, then SLAM. This way I won't need to use copious amounts of chlorine to kill the algae. Once the water is replaced I hope that pH will drop, if not I think I should drop it to 7.4 or so prior to slamming. I'm hoping to get the CYA down to 40 or 50 (something manageable).
The pool is just colored green at this point (nothing major), but the filter hasn't been cleaned since fall. Should I clean the filter before I do all of this and is the above approach way that you all would suggest? I have the TF-100 test kit so I'm ready to do what is necessary.
Also, I have an inline chlorinator which I think is the culprit of the high CYA in the pool. It's adjustable but even when I dialed it back the CYA seemed to race out of control. It has been off since the end of summer and from the end of last year to now my CYA increased 10ppm. What is going on here? Thanks, everyone!
Temp=54F
Cl=0
pH=8.4
TA=110
CH=375
CYA=110
Borates=25