STC 1000 off eBay for $18. That is the easiest way to control the fermentation temp in the fridge. Go crazy and get an arduino and flash the stc with alphaomega's stc1000+ to get temp profiles. https://www.homebrewtalk.com/f51/stc-1000-a-464348/
Thanks for the tip! Picked up an STC 1000 to arrive on Tue. Also, have a cheap thermo-mechanical thermostat for $6 to arrive on slow-boat from China. The refrigeration unit of the 1.7 is capable of doing sub-zero. My thermo is definitely shot, so i bypassed it and it got down to -1.