I have a 2 1/2 month old panther chameleon in a 24in x 24in x 48in screen enclosure.I am using an 18in reptisun 10.0 uvb bulb passing through a screen but I am wondering if that is too much uvb and if I should switch to the reptisun 5.0 bulb. The reason I went for the 10.0 bulb in the first...