Hello, ive been looking around the net but cant find much info. I live in terraced house in coventry, typically they have wooden joist floors (this is downstairs). my house was a two up two down, but the ground floor wall was knocked through and the ceiling reinforced. I didnt do this it was done years ago. Well i do have two 400 litre aquariums downstairs, one creates a divide in the room resting over where there used to be a wall. These have been here for 3-4 years now. My question is that I would like a larger aquarium, but it is difficult to find info, unfortunately i dont have concret flooring. Does anyone know how much weight the floor can support? There was an artlicle this omonth in pfk whith a bit on sighting aquariums, but it is vague.