Yeah I saw a forum on here about taking out the filter, but it has an inbuilt lights, so I say why not use them? You can replace the fluorescents with some UVB bulbs and your away. :thup: I guess you wouldn't have a great build up of humidity, providing all that is in there is a water bowl. And if humidity is a problem you could get one of those buckets with stuff inside them and they remove humidity/water, I saw them at mitre 10. Or you could get a small dehumidifier to create a current of air and remove water, I'm assuming that too much humidity is bad for a blue tongue? In turtles they get RI(respiratory infection(s)) with too much humidity, these can be deadly and normally take a long time to cure. :smot: