max size aquarium in a condo?

[reptile guy]

Should be able to put a good 300 gallons without issue. The thing that always baffles me is why would the tank crumble a floor made out of 2x10's standing on end (each 2x10 is capable of supporting a very large amount of weight) when it's not crumbling the store bought stand made out of cheap practically unreinforced plywood? If an allglass stand can support a 210 gallon (I'm sure we've all seen all glass stands lol) then why wouldn't your floor be able too. Most buildings are over engineered and should be able to easily support the weight of a car and or having 20 people standing together for a photo. If your stand isn't crumbling then neither should your floor so go big! lol