Marie,
The stuff that I use is SuperErace, made by Phoenix. I did q quick search on the internet, and this is all that I could find:
I do know that, after I use the SuperErace, I get all that fine brown powder in the bottom of the pool. I am guessing that this powder is the "crystals"? My DE filter used to filter it out, but the cartridge filter does not, so that is why we have to vacuum to waste. (Have I mentioned that I hate the cartridge filter?)Metal Out and Erace are metal sequesterers. {they block the metals from staining but do not take them out of the water} Super Erace and Metal Magic are actual metal removers. {they change the chemical composition of the metal to a crystal so that it can be filtered}
So, just in case this is one of those chemicals that needs a higher ph, I will keep the ph at 7.5. I am still mad at the pool store people, though. Rudeness is just not good customer service.![]()

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