Frameless Detolf?

[Jadetooth]

I haven't attempted to make an aquarium but I have a lot of them. I would be surprised if this would work (and be worth doing), as probably the deltolf is optimised for thin light glass whereas aquariums have a decent overlap for the silicone to stick it together.

Fish tanks can be crazy cheap second hand, and very often free if they leak (no prob for hamster).

Seeing as you're committed to making a lid for deltolf anyway, perhaps consider buying a "frame free" or glass only tank in similar dimensions and you might get the aesthetics you want. Down side is it would weight more, and might be too tall, but worth a look (I have got all my tanks a fraction of the price new online).