more 2 cents.
1) tank Level?
Usually for balconies, the floor is slanted.
From pics, if seems your tank is slightly leaning towards the right.
Or maybe I am wrong? Did they level your tank?
2) DI water or Tap water?
Just wondering did you fill water directly from the tap?
3) just a hint, you will be cleaning your glass very often with your magnetic cleaner.
So make sure you get those float type and scape your rocks / corals with a good margin away from the glass.
4) Going to get monitors or controllers? .... PH / ORP at least?