Far from an expert, and don't want to hijack but here's the new shallow 60g I got built. Just moved the two original halves I had in a IM fusion 20 nano tank into it tonight. The left section from the nano I did up with just superglue when I started in the hobby, but the rest was with hydraulic cement that I got from Eli in Calgary before he packed up shop.
Dry:
https://flic.kr/p/23weLNy
Wet:
https://flic.kr/p/JN2fSk
Nano original:
https://flic.kr/p/E5TgVK
The next is in a 65g Aqueon with that curved internal overflow.
Wet but new:
https://flic.kr/p/S2V81e wanted a high wall look
After a year or so:
https://flic.kr/p/YXzXUo multiple tank issues, never did get much coral in it with two fallow periods in a year, then some nasty cyano when I started using AF reef salt last fall.