hi! i'll be getting a glass aquarium soon. it has 2 horizontal 6inch glass panels on the top side of it(to support the lights). i'm going to use it for my rainbow boa. however, the tank doesn't have a cover and i have to either get or construction one. anyone has any ideas on how to construct one(materials, design)? the heat source is an overhead heat lamp, which should rest on the cover. i'm thinking of making use of the glass panels to secure the cover down. thanks!