About the weight of the tank - In my case two 1 meter beams will be inserted into a principal brick wall which is about 14 cms thick, taking about half the weight of the tank, and then two other short beams (80 cm) will act as legs, resting on two ceiling beams - or maybe I can spread the weight over three ceiling beams, by lying a short horizontal beam over the three beams. All the beams are 7,5cm x 12,5 cm thick and the ceiling beams are seperated by 60 cms. So I thought that since the tank will be next to a brick wall, the ceiling beams would be very strong at that point (the support legs resting about 80 cms from the wall) In any case I suppose I should limit the tank capacity to around 300 lts (with lower overflow pipe) to be on the safe side? Or do you think I should reduce it even more - 250 liters? which would be half the tank capacity.
The present old uralite tank holds 200 lts and even when empty weighs maybe 50 kilos)