help with heat and humidity at bottom of my rack

my rack keeps great heat 5 shelves down but the two next to the bottom doesent heat up as well no humidity i cant up the temps because its fine in the other ones what can i do to warm the bottoms up im stumped right now

What kind of rack? How big is the flexwatt? 3" 6"? Are you sure the flexwatt is run through he bottom two shelves properly? Are you using a temp gun to test temps? Need more information to diagnose problem. Is the rack up off the ground?

its 3inch the flexwatt is running good through the other slots just not the two bottum i dont have a temp gun the rack is about 3 and a half feet tall or 4 feet tall i have 4 16 qt tubs and 4 28 qt tubs its not off the ground it sits on my carpet ima put the picture of the rack on my profile picture its a great built rack i love it but just have that one problem

dj, it is kind of hard to see, but I would first try to get it up off the floor with a couple of pieces of wood (heat rises). Then, I'd bump the temp a degree or two to see if that helped. If it didn't, then you can wire the bottom two shelves separately from the top four shelves. You will need a separate thermostat for the bottom and top. One thermostat that can do the trick is a VE300 dual. It has two probes and can maintain different temps in different sections.

i wish i had known about the 300 i may have to get that one i have a ve100 should i just get a 300