So far the only Mercury Vapor bulb i know that has a 70 watts is the SunForce Mercury Vapor sold by Big Apple Pet Supply. I wanted a lower wattage Mercury Vapor for my close chamber enclosure for my upcoming hatchlings. The 100 watts brings up the heat up to 110+ for the basking area and im afraid that it does get too hot. I want to get the 70 watts to bring down the temp a little. My question is, has anybody use this product before. i know Big Apply Pet supply is very reputable reptile supply store but i just want to hear from you guys. Pros and Cons would be nice. ^_^v Thank you for your time.