Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
I did that with a 75g I used for box turtles before setting up a pen outside. Exactly as stated before a razor blade works well. Be careful you don't scratch the glass like I did. I cut small pieces of plexi-glass and glued top bottom
with aquarium silicone, you can glue bottom instead or both. And yeah what are you using it for?