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Lovely looking pond there Norm.
Yes, I do need to see the rock-work as I spent such a long and painstaking time doing it.
I have a home-made bio-filter in action with the existing 3-tier pond system that keeps the water clear and the algal deposits to a bare minimum. I also have a sink-well off to the side, that the deepest part of the pond drains into. The pump will move into this well when it's all done, for an entirely self-sufficient and self-cleaning biological eco-system.
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