Nikki wrote:
[new tank]
good in some ways and in others its not, we are still deciding were
to put it, right now its a living room decoration (right smack in the
middle of the living room)

Unless you got a concrete slap as floor this is the worst possible location
because the beam have to support the longest possible span. Alongside a
load-bearing wall spanning across multiple floor joists is the best.

apparently salt water and fresh water are different weights????

Well, sure. You are adding 3.5% of salt. That's some weight, too.

jue