Howzit guys, been a few years since I been on the forum. Getting married in 3 weeks, and the SO and I decided we want a HUGE tank. So a lot of planning of where it would go and what it should look like, we have finally decided on a tank, and I need to build this now to keep her happy, and me happy in the long run. But I need your help, as I'm no expert when it comes to working out the glass thickness. 
So there is the image of the tank with dimensions. That is just a ruff sketch, I have used 12mm Glass on sides and 20mm on the bases?
I dont mind putting braces on the top. I saw that the tanks they sell which is 1500 x 600 x 600 is 10mm glass with braces with double bottom.
Then the next problem is the overflow, I want something quiet, was thinking ocean to ocean overflow?
Sump will be a nice DSB, my sump will be 1200 x 450 x 450, would this be sufficient?
Tank will contain soft corals, livestock and maybe one hard coral. so lightning from LED would be sufficient just need to work out the lumens needed to reach bottom of 800mm and 1400mm (maybe a spot LED light for that deep)
ALL my equipment will run from 12V, Solar panels, inverter if I really have to, but sofar I have found all equipment will be able to run from 12v. I dont want to use utility for the simple reason of our eskom systems with unknown power cuts.
This project is a big one and might take a long time to build, but will be worth it.
If anyone can help shed some light or advice on my project, please do.


So there is the image of the tank with dimensions. That is just a ruff sketch, I have used 12mm Glass on sides and 20mm on the bases?
I dont mind putting braces on the top. I saw that the tanks they sell which is 1500 x 600 x 600 is 10mm glass with braces with double bottom.
Then the next problem is the overflow, I want something quiet, was thinking ocean to ocean overflow?
Sump will be a nice DSB, my sump will be 1200 x 450 x 450, would this be sufficient?
Tank will contain soft corals, livestock and maybe one hard coral. so lightning from LED would be sufficient just need to work out the lumens needed to reach bottom of 800mm and 1400mm (maybe a spot LED light for that deep)
ALL my equipment will run from 12V, Solar panels, inverter if I really have to, but sofar I have found all equipment will be able to run from 12v. I dont want to use utility for the simple reason of our eskom systems with unknown power cuts.
This project is a big one and might take a long time to build, but will be worth it.
If anyone can help shed some light or advice on my project, please do.