I wrapped it in fiberglass insulation...kinda messy. Recently I converted a cooler into my res so its all good.

I run it on the same timer as my lights....temps will move slow so if it gets too cold just unplug it for the day and take a reading the next.
Cyclonite Reviewed by Cyclonite on . Cool Works Ice Probe for Waterfarms I have a waterfarm setup. 4 modules, recir. with the great help of people on here. All of my temps, nutes, ppm, ph are good but it looks like I am getting root rot and its the 1st week! So, I have adding freezer packs (placed inside of ziplock baggies) to help keep the water temps down. Without I am around 72-75 deg. That shouldn't be enough to cause yellowing on all leaf edges, but it looks like it is. Upon reading posts regarding water chillers, I came across this nifty little item. You can Rating: 5