Hi fatswede and welcome to Pond Boss. I don't have an answer to your question but I'm sure some experts will chime in soon so stayed tuned!

Good luck on your new pond and post photos when possible.


JHAP
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"My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives."
...Hedley Lamarr (that's Hedley not Hedy)