To back this up. One of my ponds, in operation for six years has parts of
the edgeing capped with treated planks. This has caused no problem with fish
and plants. The caps are not in contact with the water except after heavy
rains or at spring thaw. I have not done any real water changes, although
lowering the water for maintenance etc has been done. I am far more worried
about the effects of winter on my stuff, which has shown to be extemely
harmful this time around.
Ray
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