Along with the nuts and bolts I need to mount it. I'll be using cyanoacrylate glue to seal it. Man am I nervous about drilling into the enclosure lid! I don't know what type of plastic it is. Some kinds are just fine being drilled/dremeled. Others are brittle and crack/shatter when you do that. If it does crack, it isn't as though I can just buy a replacement lid, it's part of the enclosure. I'd be out $200. Crossing my fingers.
Also! I've gotten new filter cartridges and something called algae gone which should halt algae growth from now on. That's been a huge pain in my ass, so I hope this stuff works.