Was thinking about ripping the wall out down stairs to inspect and place alot more 2x4s in the wall for extra security since I use to do sheetrock and maybe add some support to floor as well. I haven't decided yet.
Hey all...new here
Read your post SalteeDogg and you brought up some serious questions.
I am in the middle of consulting an Engineer as I am not confident that my '70's House will support a large tank.
I posted as I want you to be aware that your WHOLE floor needs to support the weight of the tank, across ALL joists and your idea of supporting it with 2x4 will be a toothpick fix. Please read here how large an aquarium can my floor support
It makes for very boring, but very Good reading. It has made me think twice about just installing a big tank. As I said, I am researching Engineers to make sure my Old home is going to stand up to this.
As a Homeowner it can't hurt to spend a couple hundred dollars or whatever it costs to be sure that Insurance will cover it if the floor fails.
With that in mind........
At least use 2x10's and make sure you do this BEFORE you place the empty tank so you alleviate any floor flex or whatever it's called.
After the tank placement is not good.
Good luck with your new tank !!!!!!
Greg