The stand for the water tank was quickly made out of styrene strip for a show. The intent was always to do a brass one to give greater strength. The problem was getting brass angle that was fine enough which I finally did from here :http://www.metalsmith.co.uk/
So here are some pictures of the new stand with the old platform and tank. I have used the 1mmx1mm angle throughout, although the diagonal cross braces should be a little finer.
Now the stand is much strong and will take bumps better!