I was looking at the extended discussion of rocks-or-no-rocks. It is
amazing for its length and its civility on an issue with such diversity.

Good show, pond friends.

Jim

JGW wrote:
We're getting ready to build our new pond. The contractor wants to
line the walls and bottom with rocks, which he says will serve as a
great huge biofilter. I have read that it's impossible to keep the
pond clean with rocks on the bottom, and that they can trap hydrogen
sulfide gas.

What are your thoughts?

Thanks.

Joan
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