I'm pretty sure that I'm OK, but I figured that this must have come up before so I'll ask. I have a 220g that I'm wanting to put on a main floor. It will be around 3500 lbs (approx) all told with everything in it. The joists are running parallel with the tank length and the main bearing beam is in the middle of the tank length. Do I need more bearing posts on each end or am I fine in not doing it? Any thoughts or ideas are appreciated.