maintenance like a pondless waterfall or stream?

swimming pool that was poorly converted to a pond. We changed the fitler to Bog filtration, and added a stream so the the home owner could see the water cascading toward their deck. At the end of the stream we used a pondless aquavault to collect the water and pump it bac up to the pond and bog. The water is crystal clear as you can see whoile I'm swimming around with the fish! Let me now if this helps.

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