Reptile Basics Rack/Paper Substrate

[Slim]

Maybe you'll get it 4 or 5% higher in a tub. I think if there was a substantial differential there it would be an indication of too little ventilation.

The RBI Racks hold humidity very well, and ventilate nicely. That's why I drill my holes in the front of the tub low and drill them high on the rear of the tub. The rear of the tub is the warmest, so when that air escapes through the high holes, it pulls new air in the front through the low holes. A basic thermal pump concept.