lockrookie's 50g tank build

[lastlight]

Hmm that's a very simple and very easy to construct canopy. Will make working in there a breeze. Will it sit over the lip of the tank or will there be some daylight visible through there? According to your drawing little fingers will fit in that gap even with the lid shut.

I'd leave a small gap maybe so you can blow fans across the water and get that cooling to still work for you like an open top tank.