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I gave the lye bath a try on some Pukani that was pretty covered in dead matter. My lye mix was pretty much what was previously recommended and the pH was 12.3 when the rock had been soaking for a day. After two days when I went to rinse it off I got some foam, soap bubble foam. Yes, it would appear that I made soap in my rocks. Two days outside with a protein skimmer in my trashcan of rock next to a fan blowing foam into the yard. High pH, Low pH, add ca+ add salt, change water, still trying to figure out how to rinse it all out.
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