I used three of those and a 4x6 to support my 150. I have the 4x6 running across the beams the tank is sitting on and put three of those jacks underneath that.
Excellent Would I do like I was planning and use a Ibeam running parallel to the joist and have two of these supporting each Ibeam? I just worry about the joist not supporting the weight across its span. because of where I want it I have to sit it the same direction as the beams run.
Thats why I thought two sets of ibeam on pillars on each side of the beam would hold the tank.
I thought about that the second I saw it was not drilled. I even though that because of how it was placed in the tank it could still be used if it was filtered by a canister. Just was not sure if it would be safe I wouldn't have to buy anything the cut outs from the new top section would easily cover the lids