Thanks for the reactions!
Jman, the builder used 0,5" glass. This was enough because the tank is shallow. There is no bowing at all.
Kigs, sorry I haven't posted some pictures of the overflow yet. Will post some soon for you.
Small update:
I doubled the amount of water compared to the old tank. That is a lot of new SW, so a small cycling has started again. All corals and fish are doing well.
I'm still busy with the lights. Besides the MH I decided to place some T5 HO above the tank to get a better spread and spectrum.
I also bought two MH spotlights that I will point at the two highlights in the tank.
Cabinet and sump are ready, electrical unit is installed. I'm currently dialing in the Ca reactor and Kalkwasser Reactor.
Besides that I'm finishing my plans for the aquascape and new livestock.
Will make some pictures soon when I make progress and things are a bit more finished.
Leonardo