I have a 30000 gal inground pool,
with painted (peeling) plaster finish.
My fc is 1.0 combined is .5 (most of the time combined is 0. I was not home for a couple of days so free had gone to 0.)
ph is at 8 right now.
TA is 80
CYA is 25 to 30
Hardness is 300.
Pool is sparkling clear, smells and feels good. I do have just a very little very dark green or black scum just at and above the water line.
temp has been in the 80s for a couple of months now.
air temp in the 80 and 90s.
I am using BBB chemicals.
I add 2 to three quarts of 12.5% bleach each day after testing. This keeps my free between 1 to 3 parts. My PH started floating up just in the last three weeks or so. It had been relatively stable for months requiring only an occasional lowering. Now I have to add a quart every 4 to 6 days sometimes 2 quarts to get it back into range 7.5 to 7.8. What could be causing this? Possibly this black scum or ??
with painted (peeling) plaster finish.
My fc is 1.0 combined is .5 (most of the time combined is 0. I was not home for a couple of days so free had gone to 0.)
ph is at 8 right now.
TA is 80
CYA is 25 to 30
Hardness is 300.
Pool is sparkling clear, smells and feels good. I do have just a very little very dark green or black scum just at and above the water line.
temp has been in the 80s for a couple of months now.
air temp in the 80 and 90s.
I am using BBB chemicals.
I add 2 to three quarts of 12.5% bleach each day after testing. This keeps my free between 1 to 3 parts. My PH started floating up just in the last three weeks or so. It had been relatively stable for months requiring only an occasional lowering. Now I have to add a quart every 4 to 6 days sometimes 2 quarts to get it back into range 7.5 to 7.8. What could be causing this? Possibly this black scum or ??