Thanks all..
I've had that cap for probably 3 years, its been fragged about a dozen times. I got pieces of it every where. It's also pretty darn tuff, its been through all the ups and downs of my tank, once when I took it out to rearrange the tank it wouldn't fit in a 10 gallon tank or 5 gallon bucket, i had to frag it.
Checkinhawk the nano is going great the zoos are a little upset because i rearranged the tank again for the 10th time lol. But it's doing good no algae.