Hey dejay did you ever get the ice probe? I'm curious how well it works. Right now a have a 55 gallon barrel Res. with 30 gallons of nuted water. Thats getting warm(75f) and I'm maintaining it with 2 one gallon ice bottles. It drops my temps down to 68f but climbs slowly. I'm curious if that probe will work for me. I kinda don't want to buy a water chiller cause that's an extra 300 watts.