yeah, he is very active at night. All my friends are giving me **** about having to be quiet and keep the lights low for the frog. I thought a cover ala bird style might be a good idea. It's a 10 gallon tank. I have seen people keep them in tuperware sealed up before, so my guess is that they do not consume a high volume of oxygen, at least not 10 gallons in a night. The ultimate goal is to have the most stress free environment for him.