Hello all I have had my chameleon in a cage with lights that the oet store told me to buy but not sure if they are the right bulbs my chameleon has been fine for 4 months but I am putting him in to a 4 foot cage now he is in a 18 in cage now anyways current light bulbs I use is a blue light bulb that stated 60w I believe that is uvb and then the other which just blew out yesterday is reptisun 5.0 uvb now that im researching im just confused why does one measure with 5.0 and the other in watts they are both uvb but one is blue???? am I using the right bulbs what should I use for a 4 foot cage ????