the bog filter and the little people

Listen now (15 min) | In my backyard sits a fairly large in-ground swimming pool encased in concrete and tile - the home of 10,000 fish. I haven’t counted them all but there’s a lot. The little dark ones at least. The goldfish are fewer in number but much larger. In aggregate they form a biological community that swims around all day and eats algae off the walls of the pool as well as the fish pellets I throw in there.

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