i use a black light for my female and a ceramic heat emitter for my male. they work perfect for me, but they do suck humidity. i have to mist there cage 1-2 times a day sometimes. not lately though cuz it's been more humid around here.
for vanessa's 3x2x1.5ft cage it is 50W, but its a wooden cage not an aquarium. it has six round hole on the bottom of the left side and 6 round holes on the top of the right side that are about an inch and a half thick. for zulu's 4x2x2ft wooden cage with two vents on each side that are about 6x8in. it's a 100W ceramic heat emitter.