I have a 32Qt. Rack from herp enclosures. The other day I was told to move my probe to the flexwatt instead of the tub. I did this but when the Helix was set to about a hundread the tub was still only 82. My ambient temps are around 75 all the time. If i place the probe in the tub I can maintain 92 all day long. Is there something Im doing wrong here I went and got foil tape to tape the probe to the heat tape, it just will not heat it up enough it doesnt seem.

Thanks
RK