Is this good enough for support??

[AquaticFinatic]

So ill start my tank build later but I want your opinions on my support system please. I have a 6' 250g that runs with the joists. I made a support wall and stringers held on open side by 2 jack posts. The second is behind the furnace. All 2x8 with 2x4 for the wall. Its sitting on an out side wall. I had the spray foam guys spray the underside of the floor to help stiffen it up. Opinions please as I think its more than strong enough.