Good news - The apartment manager stopped by and looked at it, and where I have it, and said no problem.
Bad news - The lady down stairs overheard us talking in the door way and met the apartment manager as she came down the stairs. I heard them start to talk about a tank, and went down to investigate. The lady down stairs - we'll just refer to her as the wicked old witch - told the aparment manager " I saw them bring that gigantic tank [ its only 75g

] upstairs..." refering to when Peter and I took it off his truck, "... and that "THING" is allready staring to make the acoutics of my celing flake off." She looked at me and asked, "How much water does that "THING" have in it right now?" I said NONE

Just sand. So the apartment manger and myself walked into her apartment to see the damaged celling. IT WAS ON THE OTHER END OF THE APATMENT !!!
So anyway, to make a short story long, the tank has been OK'd to continue. Thanks for everyones input, and I will make a call about the renters insurance.