Hi,
I noticed some black agae spots in my gunite pool. They are small - about 15 in the entire pool.
I have spot treated them with Trichlor chlorine pucks, and scrubbed them. No success.
Volume 20,000 gallons
SWG salt 3200
pH 7.7
TA 100
CH 280
CYA this is low. I haven’t raised it yet, as the Chlorine is holding well with my SWG at 5 to 6. At one point it was at 10.
My SWG is running at 45%, and I understand that I may be overworking it with low CYA but I am ok with that for now.
I would like to lower the pH to at least 7.6 with acid, but I am concerned about TA going down as well.
I would rather not triple shock my pool.
Please let me know of any ideas on how to deal with the black spots and how to lower the pH while keeping the TA in line.
Thank you!
I noticed some black agae spots in my gunite pool. They are small - about 15 in the entire pool.
I have spot treated them with Trichlor chlorine pucks, and scrubbed them. No success.
Volume 20,000 gallons
SWG salt 3200
pH 7.7
TA 100
CH 280
CYA this is low. I haven’t raised it yet, as the Chlorine is holding well with my SWG at 5 to 6. At one point it was at 10.
My SWG is running at 45%, and I understand that I may be overworking it with low CYA but I am ok with that for now.
I would like to lower the pH to at least 7.6 with acid, but I am concerned about TA going down as well.
I would rather not triple shock my pool.
Please let me know of any ideas on how to deal with the black spots and how to lower the pH while keeping the TA in line.
Thank you!