How big a fish tank can an average UK upstairs floor support?

Question

I am getting a new fish tank for upstairs, and I was wondering how big the fish tank (in litres please) could be without any danger of the floor collapsing.

This is not a reinforced floor of any kind, just an average rented house floor.

Thanks!

Answer 1

OMG I can't even speculate at the moment.  You can email me tomorrow with the room dimensions and I'll try to get the book figures from work.  I'm in the U.S., but I do structural work for a living.  It's all the same and I know metric.  I might not come back right here, so you'd be better off if you email.  It might take a couple of days because I'm on an emergency project.  Overtime is usually a treat, but this time it's a genuine emergency and that stinks.  You can only put in so many 11 hour days.  I blew it off yesterday (Saturday) but I'll be in bright and early tomorrow, pretending to enjoy my job once more.  

The reward is getting people like you the info you need.  Stay in touch.

I'm a bit loopy right now, so you have to take the initiative tomorrow.