Hi, I don't really use lighting. I do have one that i sometimes drag out if its been a week of no sun but I only put it on for about three hours if I do use it. My Frog enclosure's are placed in an area that gets say two hours sun each day. It also only shines on less than half of the enclosure. My frogs always go to that corner of sun during the day. This has worked really well for my frogs that are indoors. Sorry i can't be of more help to you.