will a 150 gallon need a re-enforced floor?

[kien]

Okay, so I have decided that I'd like to set up a 150 gallon. 72" long by 20" wide/deep by 24" tall. I'm not sure if I should worry about re-enforcing my floor or not. My basement is finished so I can't easily modify anything underneath. What I do know is that the tank will be running perpendicular to the floor beams.

Attached is a high detailed blueprint of what the floor support looks like. The red box is the aquarium.

Thanks!