Try to find your floor beams and place the tank on top parrallel to them. If you haven't done anything to your basement you could just go downstairs at look up to find the floor beams.
Arrrrgh............ I am trying to convince my dad aparently he thinks its to heavy ( well it is ) and way to expensive it cost 300 usd with filters lighting wood cabinet and heater. I hope i can convince him. We found the load bering wall it. It goes right in my room and kitchen and living room. Ill try to reason with him.