I have a 240g saltwater reef system, but 1/2 of that is the sump & grow out tank in the basement. Plan on about 10 lbs per gallon with all equipment.
So about 2,200 lbs
Is there support directly under that wall?
If not you will need to install support
Best support is when joists run perpendicular to the wall/tank
I have multiple circuits & multiple GFCI's to power my tank
Multiple smaller heaters instead of 1 heater
Dual pump/water circulation system to keep water moving
Fresh water or saltwater setup?