I installed a new ALD and probe placed behind my acrylic tank where the stand and tank meet above where my scrubber bucket sits. To give the probe more range I folded a paper towel longwise place probe on top. The problem is the paper towel keeps soaking up small moisture spots setting off the alarm. What is going on here there is no wet spots that I can feel on the backside of the tank or stand where are these wet spots coming from? If I remove the paper towel all works fine.