cedar or redwood for benches.
buy a brick, put that into a gallon of your water and see if the pH rises. if water
is not flowing (? do you want to make a veggie filter? then line it with pond liner)
then calcium wont leach into the pond in significant amounts. Ingrid

"k conover" wrote:
What material are the greenhouse benches made out of? Another thing I'm
considering that someone on this newsgroup had done is "walling off" one
edge of the pond with bricks or stone and putting most of tall plants in
that area--I won't have to net that section since the fish will be on the
other side...only problem I've run into is finding a real type of brick that
doesn't contain lime (all the "brick" and stone carried at Home Depot
contains
materials that will leach lime into the water--according to the
manufacturers who told me not to use them in my pond)


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