I looked under the house today to see which way the joists in my floor go. Of cousre they go the oposite way that I needed them to go. I dont have anywhere else to put the tank and I really dont feel comfortable going under there to put more support down there. I was going to be buying a 100 gal but I obviously dont want there to be any concern with the thing falling through. Is this a deal breaker? Should I go with somthing like an 80 gal instead? Advice will be appreciated.