We have 40 year old marble plaster pool. The plaster is rough in areas and black algae keeps invading. I scrub it back from areas until it’s gone and dead, but it keeps reappearing in new spots.
levels
FC 5-10
CC 0
ph 7.8
CYA 50
TA 50-60
Calcium 300
Salt 3500
temperature around 30 C. No problem with algae over winter.
Anything obvious I should change?
is algaecide worth it?
I know I have to beat black algae back the hard way, I just want to set up so it stops recolonising...
levels
FC 5-10
CC 0
ph 7.8
CYA 50
TA 50-60
Calcium 300
Salt 3500
temperature around 30 C. No problem with algae over winter.
Anything obvious I should change?
is algaecide worth it?
I know I have to beat black algae back the hard way, I just want to set up so it stops recolonising...