thanks for that i suppose there are many different safe methods by the looks of things - i will probably try carefull selection of rock for a balanced free standing structure and just make sure i have some weight pinning the overhang down safely. if this fails i can always move on to permanently attach or drill the rock.
i have 1kg of rock at the moment but adding another 4-5kg of LR
at the weekend! i will try to leave some areas for corals to take a hold in the near future.
if i stacked rock against the back of the tank would there likely to be dead spots? i have been advised a small korallia pump would be a welcome addition in the Orca 550?
thanks for your advice - bring on the live rock :p !!!!