Raised Foundation Support

[Eye H8 Empty V]

Since the flooring support sticky is somewhat inactive I figured I would start a new thread.

I’m finishing redoing the flooring in my kitchen (finally!). I’m in a 1960 built home on a raised foundation, 1/2” hardy back and 3/8” porcelain 12x24 tiles. The tank stand is welded steel tubing and very heavy. Include the 90gal aquarium and 34gal sump and I’m looking at a lot of weight. My questions are because it’s welded steel is the weight evenly distributed over the span of the entire base? I’m guessing I should put in some support because it won’t hurt. Are screw jacks enough? Do I need to place wood “linking” jacks together? Below is a pic of the stand in preliminary form and the jacks I found on Home Depot’s site. Thanks!

 

[kyleinpdx]

My worry isnt the tile cracking from the weight of the tank directly, but rather the gradual deflection of the floor.

Whats underneath the house look like? Reasonable access? Is this an exterior wall? What size are the joists and which direction do they run relative to the tank?