Why are the majority of bottom drains that I see shaped like upside-down
bowls?

My intent was to install two such drains in my pond, but now I am thinking I
may have an idea for different design. I am thinking I'll take a 5 foot
section of PVC (or about however long my pond is), and slice slits into the
pipe. Each slit would be 3/4'' to 1'' in width and they'd be spaced about
1-2 inches apart. Then lay those flat in the pond, and hook that up with
T-fittings to my plumbing. Then I would have a 5 foot long bottom drain
running the length of the pond. Depending on how I dig the pond, I could
also optimize the bottom of the hole for such a design, slanting the whole
bottom in one direction towards the drain.

Any thoughts? Aside from it possible being very visible, what are the
downsides to this idea?

--
BenignVanilla
tibetanbeefgarden.com
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