In article , Indiana
Jones writes
I think you will rely on the crushed coral in the end to do the
trick.... all the little pieces have infinitely more surface are than
any large rock decorations will. Putting crushed coral, or crushed
oyster shells (cheaper) in your filters will help too.

Thanx, that seems to be the opinion of a few people. I may stll go with
the granite for the decorations as it looks good. I'm not too worried
about the weight, the stand I intend to build will be strong enough to
park your car on ;-)

Thanx for the reply

--
Alan Silver