The freezer works real well and make a box around it including a lid and put that foam insulation on the frame then find a vane type pump online that pumps air then get some 1/2" soaker hose and attach it to the inside of the freezer using them plastic wire clips silicone the screws then attach it to the pump with a valve to regulate the air. This system is in use and is flawless and with the box around the freezer it wont freeze even if the room its in isnt heated which thats the best to keep your minnows acclimated to cols water.