Just heard the ungodly sound of my blowoff quart of star-san solution sucked dry. For 2 weeks primary fermentation has moved from explosive to still over the last several days, with no observing changes in the level in the quart jar, until just now. No changes in ambient temp, constant. No idea what's happened, but it's certain that over a pint of star-san has now just joined what promised to be a beautiful 1.120 OG RIS. Never happened before, puzzling. The only thing I can guess is that the yeast slowing down to dormant lowered the temp enough to cause suckback, but that seems implausible to me - that's a lot of star-san.