Originally Posted by Tryin2fish89
and i know this probably is wrong, but seems logical. If my stand can hold the weight of my tank... then why couldnt the floor that supports my roof??
Your walls support your roof not your floor. Your floor transfers weight to the walls. How you place a large tank is very important when your are dealing with a floor made of wood. Placing a tank running against one wall can be very dangerous compared to placing it against another wall. The support beams(joists) for example under the floor run across the floor in only one direction. In my parents 30 year old house these beams are 9"x2"s and are placed about 15" apart. Placing a tank( even a 55) so it is parallel to the joists is not suggested as it places a lot of weight on only a couple support joists the floor will spread it out some). Placing the tank so it is perpendicular to the support beams spreads the weight out because there are now more joists running under the tank.
When there are heavy objects built into a home like a bath tub, the floor beams are often reinforced. A bathtub is not even that heavy.
Every house is different though. There are key supports in every house. The outside walls are are important I know that. Not ALL the inside ones are though. Some are key supports though. Example would be my old house had a large basement with not many walls. There was a cement pillar from floor to ceiling, pretty sure that was important lol.
Here is a good link for you: how large an aquarium can my floor support
Also an additional reason why basement is better. Even if the floor holds and doesn't sag or anything. Disasters can happen and 200gallons is A LOT of water. If your tank ever did(even though the chances are slim) fail significantly the damage will be serious. Carpet would be your least concern. The wood under your carpet and the floor joists are not treated wood they will absorb water. Basement is carpet, maybe some sheet wood, then its concrete.