We use iron stands welded togeather, and it would be strong enough to hold 4 250gals and one 500gal in the middle.
Bob, what's "P&O?"
jm1212, I'm confused as to why it would matter if the entire stand is covered if the bottom rim of the tank is the only contact point with the stand. I don't see how it could help if it's not touching the tank. Am I missing something?
Too often I see the horizontal frames attached to the sides of the 2X4 legs and I get a little creeped knowing the only thing that is keeping the top frame from crashing to the floor is a couple of screws ( or worse nails!) waiting to shear off.