Those of you that have 35 gallon hexs, what do you use for a lid? The plastic lid has an opening at the hindge that I'm scared would let out a frog (I though about just putting tape over it, but I think it would look ghetto). Is there a glass lid that is made for that type of tank? I thought about asking the local glass shop, but a hexagon shape I'm sure would be expensive. Just wanted to know what the rest of you guys did for a lid on a hex.