WHY SHOULDN'T I USE A COIL? Well the simple answer is, they are NOT good for your beardie.. Yes, someone may have told you otherwise but please, don't put the health of your beardies at risk because you 'heard' it was okay. So how are they bad? They give off too much UVB within the first few weeks (which burns their eyes) and no.. It’s not the 'heat' of the bulb, it’s the UVB. Like a sunburn. So after it burns their eyes, it doesn't give off enough UVB causing other health problems.. WHY DO THEY SELL COILS THEN? As with EVERYTHING it’s about MONEY, not the health of your beardie. Just like junk food and cigarettes, someone makes money. MY BEARDIE LOOKS FINE, NOTHINGS WRONG. Well, here’s an example; my recent rescue I adopted died at 1 years old from his previous owner using COILS. So you may not notice it now, but it will affect their health. If you’re thinking "well, I’ve had mine for 5 years" maybe he’s suffering in silence. beardies are hardy animals and don't show health problems until till it’s too late. AREN'T THE TUBES TOO BIG? No.. They are actually more spaced out making the UVB more like the sun. With a coil, it will be in a smaller area and be too strong. They won’t be able to move away from the excessive UVB thus causing it to burn them, once they move away from the UVB they end up becoming deficient in UVB. With the tubes, they don't need to hide from it as it’s the perfect amount of UVB. MY BEARDIE LIKES HIS UVB BULB I have heard this many times “My beardie likes his bulb, he tries to get close to it” A Bearded Dragon DOES NOT like a bulb… It is simply moving closer to it because they are attracted to light and heat. If you don’t have a very good basking light they may also be trying to heat up.(even though they do not create very much heat) I recently helped a woman out who had a UVB tube light (which is good) BUT had no basking light, only a CHE.. The poor thing was climbing to the UVB bulb.. This is not because he LIKES the bulb; he is simply attracted to the light. These creatures, although they ARE wonderful do not know when something is dangerous to their health. It’s like letting a child smoke. My guess is they wouldn’t know it could kill you. HOW LONG DOES THE TUBE UVB NEED TO BE? Well, its recommended for the light to be half the size of the tank.. But I usually make it a little longer than half to make sure they're getting enough of it. IS MY VIV TOO SMALL FOR THE TUBE? No, if you have a 40 gallon or more (as you shouldn't have less) then it’s fine, just try and find a fixture about a little over half the size of the tank. CAN I BUY A FIXTURE FROM A HARDWARE STORE? Yes, if the ones at petstores are too expensive, then go ahead and buy the cheap one just make sure it can hold the wattage and that type of bulb to avoid fires. CAN I USE A FLOODLIGHT? Yes, I personally don't; but if you need a cheaper alternative then get a flood light. Just remember they can be hotter than reptile bulbs. If you usually use a 100 watt, buy a 70 watt your viv. Even lower would be fine as long as the temps are about 100-105f. You may need to play around with wattages to get the proper temperature. IT’S COLD AT NIGHT, WHAT CAN I USE? DON'T use any colored lights, they can disrupt their sleep patterns and it will affect their digestion.. What can you use if the temps are lower than 65?? use a CHE (ceramic head emitter) they don't create light but heat up the tank a bit to maybe 65 or 70 (which is a good temp for nighttime) WHAT ABOUT RED LIGHTS (INFRARED) Don’t use these, people used to say that beardies couldn’t see colour. When in fact it’s not true.. It may be dimer than a white light, but it can still disrupt their sleep patterns. They are also known to burn the third eye (on top of their head) or give them thermal burns. Stay away from any colored bulbs J IF I MISSED ANY PLEASE ASK AWAY IN THE COMMENTS!! I am not uneducated and not to toot my horn but I know a lot about lighting and other things.. If you need anything or are uncertain please just ask. Thanks for reading all the way through!! That was a lot! LOL Bulbs to use: Reptisun 10.0 (T5 HO) or reptisun 10.0, Exo terra basking bulbs (most are great) Zoo med basking bulb, Floodlights, CHE's (ceramic heat emitter) and halogen bulbs.