Can some one explain to me the best way to heat a 20 gal. long encloser?
THe problem is that my undertank heater seams to not do as good as a job that i thought it would when heating the entire enclosure. Only the tank bottom where the heater is gets heat. I thought of buying a lamp so that would heat the enclosure at a whole and use the heating pad for a basking spot. Can this be done? Any suggestions?

I want to get my bp within the next two weeks and any help would greatly be apricciated. thanks.