Tubs directly on flexwatt?

[Vypyrz]

from what ive seen most people use 1 or no hides in tubs but if you have room for 2 put them in. as for substrate use whatever you want it really dosent matter

I use 2 hides for stand alone tubs since they allow more light and visibilty. For rack set-ups it's ok to use one, or in some cases, no hides because the rack itself provides the darkness and security...