Thanks for the suggestions.
I'll try the powerhead method next.
slief - I tried the ice and no luck
firereef and Cody - the rock is pretty large and would be a pain to remove - this would be a last resort but something I may have to resort to.
killerReef - this sounds like a lot of work - LOL - but I'll keep it in mind if the power heads don't work.
Thanks to all for your comments.
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