Funnily enough, Steve had a call from Oliver whilst I was sat next to him in his workshop.
From what I can gather, Steve has offered to supply the storage trays for the top of the tanks for them while they wait on mouldings/designs to be complete.
Call Steve direct if you already have a tank as I'm sure he'll be able to fabricate one to fit perfectly.
As for the stoning, I gave the stuff up years ago