I have a glass cage(aquarium) and on the top it is covered by screen top. The problem is that when I put the heating lamp on it the screen heats up and I'm scared that it might melt.

Right now I don't know where else I can put the heating lamp.

Also do I keep the lamp on all night? I'm planning on getting a heat pad and better thermostats, but for now all I have is this heating lamp.

btw, here's my BP. I still don't have a name tho http://img87.imageshack.us/img87/7708/stretched2nh4.jpg

P.S. This picture shows how my lamp is, except there is nothing on the screen (tinfoil)