Hi guys can anyome advise me how to heat a 40 gal tank for beardie with halogen flood.lights.. if it is safe and specifications.. the basking bulbs 150w total has driven my utilities sky high in new york... i heard halogen is more cost effective.. right now cool side low 80s hot side high 90s.. basking about 105.. if someone can tell me if the cost efficiency is true and if its safe.. wattage setup etc id appreciate it.. thanks