Hello new new. Can I ask what I can use on the cool side just to add light. Does it need to be a uvb. Does it need to be the 26 watts or is the 13 watt okay. I have a 40 gallon starter kit. The zoo meed deep fixtures are to the left side wich is the hot side with the basking bulb first then the uvb. So I was wondering if I could switch it so it’s uvb basking uvb or is that to much.