If you was meaning me when you said Ian, I have a flat tank in one van a layflat in other, the flat waste a hell of a lot of scapce and the way the upright is, same goes.
hence my questions on this.
I am looking into the custom tank, my problem with them is the fixing of it to the van, I have some heavy buly things being added as fixings and am limited for space. lay flat just to much waste of space and from what I have found I do not like the rocking from them when half full, my up right does not do this half as much.
maybe I should get an upright custom made with correct baffles and cure the problem, what annoys me is the so called tanks over 300L don't seem to fit the job they are made for. maybe everyone here sign a form and sent it to makers and make them listen, 1000's use there tanks.
Alex, if this is up your sleeve then bring it on and make yourself the main supplier