I have a plaster pool and SWG.
There is a tan stain on the plaster which is worst around the main drain in the deep end. I dropped some ascorbic acid tablets on the stain and it turned black. I brought the water to Leslies and it tested negative for iron and copper. I don't want to purchase any stain removers until I know what I am dealing with. Any ideas?
FC 4
TC 4
Salt 3100
CH 200
CYA 60
TA 120
pH 7.8
There is a tan stain on the plaster which is worst around the main drain in the deep end. I dropped some ascorbic acid tablets on the stain and it turned black. I brought the water to Leslies and it tested negative for iron and copper. I don't want to purchase any stain removers until I know what I am dealing with. Any ideas?
FC 4
TC 4
Salt 3100
CH 200
CYA 60
TA 120
pH 7.8