Originally Posted by Meko
to be honest, I'd still go for extending the height. You wouldn't need a steel frame for it as the weight of a wooden unit should hold it in place.
All you'd need to do is build the bottom, the same dimensions as the top of the tank, and lift it in place.
Thanks Meko, the build doesn't trouble me it's more what to house in it. I ideally didn't want to spend anymore on it. I do have wood possibly steel even to hand so the only cost would be the glass so will be measuring up later this afternoon.
Any ideas for a background on the top section? The bottom has a top layer of rubberized paint designed for sealing ponds so could just continue with that maybe in a green colour. ....