So I'm picking Marvin up on Monday and I want to give his heating system a little test run. I have a 2' x 3' C&C cage with linen shelves as a cover. The heating system consists of a 150W red light in an 8.5" clamp lamp connected to a Zilla temp controller. Here's my concern... I don't want to end up melting the plastic coating on the linen shelves. How far away should the lamp be away from the bars? Where have others clamped the lamp onto the cage? I have some places that aren't on the cage I could clamp the lamp to... but they're kind of far away and probably would prevent the light from providing adequate heat to Marvin.