Noticed this black spot yesterday in the deep end of my pool. Thought it was debris so this morning I tried brushing it several times but it didn’t come off. Also noticed grout in this coping is chipping and has a crack. Is this typical? Worried plaster has stained. You can see the black spot from the edge of the pool. Texted PB and waiting for his response too.
current levels:
Ph 7.8 after adding MA
FC 2.5 - added bleach but haven’t tested it yet
TC - 0
TA - 50
current levels:
Ph 7.8 after adding MA
FC 2.5 - added bleach but haven’t tested it yet
TC - 0
TA - 50