So even though I just have a 36 gallon I noticed I ran my tank the wrong way. Parallel with floor joist vs perpendicular. When I walk by it - I am heavy and a heavy walker I see waves. It freaks me out. I don't really feel like moving the entire tank. Do think floor jacks in the basement would stop the bounce and not do damage to the floor? Tiger Brand Super S 7 ft. 9 in. Jack Post-J-S-93 - The Home Depot I thought I could do like a 4 foot 4x4 (unsure span) was thinking I would cover 4 joist, and hold that 4x4 out to joist with 2 floor jacks. My basement is unfinished as of now, and if I was ever to do anything I could remove, and probably move the tank. Is this a pointless act? What are the risk? floor damage? I am assuming I just want it tight to the floor but not exerting too much upward pressure?