Ok guys, thanks for all the replys. Sorry for such a late reply, but I had to be away for a couple days.
Anyways, I spoke with my dad about it (he used to be in construction, and is now in pool construction, so....) and he said my floor should be sturdy enough, but he said just as a safety precaution I should do as camshaft said before, pour a small concrete pad, then buy floor support jacks and run them up to the bottom of the joists. He said about 2-3 per joist through about 2-3 joists.
Oh, and it just so happens that the wall i'm putting the tank on willput the tank perpindicular to the joists...
So, all things are go! Thanks for all the advice guys....
I think I chose the best AND one of the cheapest solutions for my particular situation.
Thanks alot guys..and good advice from all of you, camshaft you were right on the money with your opinion, good job.
I'll get some pictures up of how the end result looks...it shouldn't be too hard to accomplish either. Maybe I could make a small guide if this works really well? Who knows....
Well, i'm off again...busy busy
Thanks again,
-Logan