Floor - To brace or not to brace??

[gregzz4]

Are we looking at multiple floors here ?
I can't tell as it looks like an elevator shaft

Are pictures 1 and 2 basically the same location ?

If so, what's the measurement from the wall to the inside edge of the left/right beam ?
I ask as it looks a bit close to the wall to support any deflection

If it were me, I'd add another full beam left/right directly under the front of the tank, and have it supported on new posts
Make sense ?

If the pics are showing 3 floors, then you'll need posts going all the way to the first floor to support a new beam for the front of the tank

I have never liked seeing my tank do a 'wave' because I have company over