Determining floor/joist weight capacity

[Trigger Man]

So is the actual display tank 148g, or is the tank and sump 148g. For added support and weight distribution you can also put a plywood sheet under the stand. I am also assuming that since you talked to your builder your house is a newer home so it would probably have silent flooring which include I beams. (these beams take a lot more weight) My tank is 5 feet long and with sump it is around 150 g. My house is a newer home and the tank is a foot and a bit from the side weight bearing wall. The tank goes towards the center of the home, and is near the middle of the room. I have had the tank there with no problems for over 2 years, and I've had the house packed with people and no body or tank has gone through the floor, so I would guess you are alright). When I was trying to get an answer about what a Joist could take I was told that each joist (if I-joist) could take around 7-800 pounds. Hope this helps.