falling through my floor?

[wetcoast]

I have just put an offer in on a 2nd floor condominium in Surrey. One of my conditions is that I have a structual engineer tell me how much weight I can put on my floors to support my 225 gallon fishtank that I have been planning for the past year. I have all equipment, just needed a place in town to set it up. They have scared me dearly saying that 40lb's per squarefoot is the maximum amount, and with my calculations I would probably be about 3800 pounds. It is $1000 for them to come down and assess. Spreading the weight a bit more with plywood sounds like a very good idea. The condo is less than 10 years old - so I do hope that this works out, otherwise I just bought a bunch of parts for nothing and should have just kept my old 65!