I have a 17K gallon two year old pool with a SWG.
Recently, I've been getting white residue on my concrete coping. I'm not sure if it has something to do with the salt, or some other chemical problem. It seems to be coming up from within the concrete. I can wash it off, but it keeps coming back. The coping also seems discolored. I never sealed the concrete, which was a bonehead move.
I've never managed to get my PH down, but my alkalinity is between 80 to 100.
Can someone tell me what may be causing this? Is there a way to stop it? Is there a way to clean the coping. Would sealing the concrete help in the future?
Any help would be much appreciated...