Setting up the temps in our new animal plastics rack

[Billy305]

I have flexwatt set that high, it isn't the best but is in't dangerous either.

How thick is the layer of aspen?

I'm assuming that your rack is using belly heat... am I correct?

Yes Belly heat, and about 1/2 inch id say, enough if you moved it around gently with your fingertips you would see the bottom of the tub right away