Hey what kind of lid do you keep on your tank to make sure it stays humid. I have a fluorescent light and a reptile spot heat light and i'm not sure how to keep a lid when those are directly above my tank. I don't want to block the heat or block the fluorescent from reaching my crabs or plants. Also I don't want to burn something with these light fixtures. should i buy acrylic and cut out a spot for the heat lamp and fluorescent to fit through?I am keeping more than 50 vampire and orange crabs what do you want to know about them? They need 50/50 dry/wet areas, eat regular fish flake food and bugs, crickets, 75-82F. Very nice to look at, you can pick them up and play with their are too small to pin your fingers/hands. Nice little pet, tend to be expensive. They breed in a freshwater.