Haha Big Dave - thanks for the tip! OK, I tried the vitamin C tablet, rubbing on the same green spot until it was worn down to my fingers - didn't seem to have any affect.
Re: Are the stains from metal or algae?
Haha Big Dave - thanks for the tip! OK, I tried the vitamin C tablet, rubbing on the same green spot until it was worn down to my fingers - didn't seem to have any affect.
26,000 gallon plaster Oasis shape 40' x 18'. 54 sq. ft. vertical grid DE filter. 1 hp pump.
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