Hmmm... I came up with yet more interesting things just now...
If anyone is interested in learning about floor strength and concepts, check this out:
http://www.cichlid-forum.com/article...ium_weight.php
Here's a good link for starting on aquarium weights (just water, rock is more obviously):
http://freshaquarium.about.com/od/aq...zesweights.htm
Then I went down and checked the floor joists in this place and holy crap was I shocked. Where I assumed would be 2x8's or 12's were these CRAP weird 2x3" truss things... not even the plywood stuff I had seen in some newer places. To top it off, they were at like 18" spacers. WTF. I am sick of all the ways builders screw people over now! No wonder the bookshelves in one room are making another room have a creaky floor!
Looks like I have to rethink the tank location until I can be sure of what those crap looking trusses have for load bearing. Sheesh. Or I could speed up the whole mortgage thing and just get a new house already. Yet another kink in the whole plan.