Hey guys, I am almost finnished building a new, larger enclosure for my green iguana, who's at the moment about 22 inches STL only but growing fast. The enclosure is as follows: Slightly over 4 X 4 feet base, X 6 feet tall. Frame is made of wood sealed with furniture laquer. The entire enclosure walls, door and top are MESH, not glass on any sides. I am located in Hong Kong. The temperatures are not extreme, but in the coldest months in winter, it drops to about 8 - 10 Celsius (about 50 Farenheit if I am not miscalculating) and in the summer months about 31 C (About 88 Farenheit) in the afternoon and dropping to about 26 C (about 79 Farenheit) in the night/evening as per the weather reports. Of course, it could be slightly different indoors. (Yes I know I may need to switch lightbulbs but please at least help me recommend one for each season as detailed below, and get the right light fixtures.) I am going to go out to buy heating equipment today or tommorow, and would appreciate your input as to the type I need. Currently, on my smaller enclosure, I have installed (by day) an Exo-Terra Repti Glo 8.0 UVB tube (40 Watt, 48 inches), a regular household lightbulb 60 Watt and a ceramic heat emitter with a fan (from regular household goods store). It keeps the temperature gradient right in the small enclosure. At night, the lights are turned off and the ceramic heat emitter is turned up a little. I also have a humidifier for increasing humidity. Now, I want to go more "Pro" with the heating for the new 4 X 4 X 6 enclosure, and I think I am going to go with the Exo-Terra line (Are they good?) They are the easiest available here. There are products from other lines such as zoo-med but the shops don't stock a complete product line for those, only one thing here and there, as well as "generic" bulbs from mainland China, which look really lousy and same price. Exo-Terra seems to be everyone's favorite here in Hong Kong. Yes, I know that sometimes a normal household bulb will do, but I want to get the best stuff anyway as I'd rather get it right once than buy over and over and get the wrong temperature. Here are my questions, if possible, please give an answer to each numbered one: 1) Firstly, for the daytime basking/heating light, I plan on getting Exo-Terra's Sun Glo Neodymium spotlight. It will be aimed at an angle (because of the wood frame in the way). For the enclosure of 4 X 4 X 6 foot with wire mesh on all sides, what wattage should I get to get the proper temperature gradient? 75W? 100W? 150W? for DAYTIME basking temperature. The enclosure is in a room that is slightly over twice the length, 1.5 X the width and 2 feet taller than the enclosure itself, with a window closed at all times, and door closed most times. I would LOVE to be free of the Ceramic Heater I am using now because it has a fan and it decreases humidity a lot. 2) For this daytime basking light, which fixture is better? Should I use the Exo-Terra glow light fixture? Or the Wire light fixture? I would personally get the Glow light fixture because it is an actual lamp shade, rather than a wire cage lampshade, so that the heat/light can be in a more concentrated beam and not spread all over the place, but I am concerned that the Exo glow light fixture comes with this "Glow reflector" surface that absorbs light and glows at night. I don't know if they are trying to simulate moonlight or what, but I thought it was supposed to be all dark at night. I don't know also how strong the luminous light it gives off after the bulb is turned off gets. A slight moonlight like glow is OK, but not if its too strong. Anyone know? Tried it? 3) For nighttime heating, I may stick with the ceramic heater I have (which I don't like, because it has a fan and dries everything up), or I may switch to Exo-Terra's "Heat Glo" infrared heat lamp. I would much prefer this over their ceramic emiter because it gives me a red light to watch the iguana at night without disturbing its sleep patterns. My question is, for the enclosure mentioned above, and my climate in Hong Kong, what wattage should I be getting to provide the proper NIGHTTIME temperature given my enclosure size and Hong Kong climate? 4) I would presume that I should get the Wire light fixture for the infrared lamp, right? So that the heat can radiate around? 5) Should I put the infrared lamp near the middle of the enclosure so that it gives an even ambient temperature? Or near the basking spot to be consistent with day time? 6) For those of you who have used the Exo-Terra's "Wire Light" fixture, do you know how the clamp works? I need to fix it to a rack, but when I look on the photo of their website, the clamp is attached firmly to the light socket, but on the other end it looks like some kind of "loop" of plastic string. I don't see how this can be used to keep the light fixed at an angle properly and firmly. Can it and how does it work? So anyway, that's it. I hope I can get some responses soon I'd like to move the ig to the new enclosure as soon as possible and I am looking to go shopping tommorow afternoon or morning. Hopefully I can get your opinions. I REALLY HOPE you can help me out because I have been buying too many things that were wrong and I really want to try my best to get at least an educated choice rather than "Buy and experiment buy again". In Hong Kong you can't return things to stores unless they are faulty in some way.