Re: white mold in hot tub
I'd follow the instructions provided with the Ahh-Some. It's not an acid or anything like that -- just powerful surfactants (soap-like substances) that dislodge/dissolve grease and biofilm so they can be removed by water replacement. So leaving it in the spa should not cause harm, but again I'd just follow the instructions.
15.5'x32' rectangle 16K gal IG concrete pool; 12.5% chlorinating liquid by hand; Jandy CL340 cartridge filter; Pentair Intelliflo VF pump; 8hrs; Taylor K-2006 and TFTestkits TF-100; utility water; summer: automatic; winter: automatic; ; PF:7.5
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