Wash the tubs out with water and a drop or two of dish soap. If it still smells, repeat with some baking soda. Rinse well, air dry. The extension cord is fine. My probe is taped down with stucco tape on the middle shelf (easy to remove, doesn't get all gummy). I have a thermometer with probe in my bottom, and top bins. Tells me ambient and hot spot temps for bottom and top bins, middle ones will be somewhere in between. Mine's home-made, and I don't have a herpstat(yet) just a hydrofarm. I saved my lids, i used them the other day when I re-did my heat tape (wired it in parallel instead of one long strip), and I will be using them again to add a second 4" strip, which will be unplugged in the summer.
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