BV,

The dome top is to keep the water flowing along the bottom of the pond
rather than coming in straight down. That helps to sweep the debris to the
drain.
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html


"BenignVanilla" wrote in
message ...
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
x-no-archive: yes

Remove MY SPLEEN to email me.