Do the black spots (all very small spots in our pool) just disappear when the algae has been killed or does it stain the white plaster making it hard to know if it's really gone?
Patricia
15,000 IG White Plaster Jet Vac Sweep Cart Filter new pumps
FC 75 (got a little carried away with the bleach while waiting for my test kit)
pH 7.2
TA 100
CH 280
CYA 50
Patricia
15,000 IG White Plaster Jet Vac Sweep Cart Filter new pumps
FC 75 (got a little carried away with the bleach while waiting for my test kit)
pH 7.2
TA 100
CH 280
CYA 50