Good afternoon. Unfortunately I'm back for additional guidance. We've been fighting algae pockets in the corners/steps/wall surfaces for several weeks. The pool water is clear besides the green/yellow I see on the various surfaces. It's not all over the pool surface (Pebble Finish), just select areas. I've been brushing the areas daily and keeping the chlorine levels elevated. I even did a SLAM for a week keeping the chlorine numbers up around 20. I did the drop test and passed. However, a few days go by and the green starts coming back. We had issues with CYA being elevated at the beginning of the summer and did a complete drain/refill.
A second issue that I've been managing by scrubbing with muriatic acid periodically is calcium build-up on the tiles at the hot tub spill over. Any guidance on keeping this from build-up?
Pool Specs:
15,000 gallon
D.E. Filter
Temp. = 83
pH = 7.7
FC = 8.5 (Hasn't been below 5 for months)
CC = 0
TC = 8.5
TA = 90
CH = 500
CYA = 60
CSI = 0.30
TF-100 Test Kit Utilized
Chemicals Used: Liquid Chlorine 10%
Muriatic Acid 14.5%
D.E. backwash/swap monthly
Guidance/suggestions are greatly appreciated.
A second issue that I've been managing by scrubbing with muriatic acid periodically is calcium build-up on the tiles at the hot tub spill over. Any guidance on keeping this from build-up?
Pool Specs:
15,000 gallon
D.E. Filter
Temp. = 83
pH = 7.7
FC = 8.5 (Hasn't been below 5 for months)
CC = 0
TC = 8.5
TA = 90
CH = 500
CYA = 60
CSI = 0.30
TF-100 Test Kit Utilized
Chemicals Used: Liquid Chlorine 10%
Muriatic Acid 14.5%
D.E. backwash/swap monthly
Guidance/suggestions are greatly appreciated.