I went and checked on my oatmeal cookie beer to see where the temps were at and had a nice surprise. Somehow during the cold crash I sucked about 1/2gal of starsan into the fermenter. Now I have done this dozens of times and this has never happened. The only difference is that I only did a 5gal batch and used a carboy instead of my normal 13gal red top fermenter. Oh and also I am using a different temp controller because my BrewPi went down (another setback) so It doesn't cool it down at a slower pace. I noticed on Sat the starsan was half frozen but nothing was sucked out at that point. Here is the setup. You can see the lighter color floating at the top that I was thinking was the starsan.