Backyard Aquaponics Made Easy by Andrew Handley

Author:Andrew Handley
Language: eng
Format: mobi
Published: 2012-08-02T06:00:00+00:00

I built an ebb and flow system next, but I had never heard of a bell siphon valve so I was having trouble getting the flood and drain cycle to run smoothly. The first thing I tried was a complicated timer system used to open and shut a ball valve, but it used a lot of electricity, and while it never actually happened, I knew that if the timer malfunctioned I'd end up with a flooded grow bed.

So eventually I came across a description of the bell siphon valve.

The idea is that two pipes stand vertically in the grow bed, one with a wider diameter than the other. The wide pipe has a cap at the top end, holes in the bottom end, and stands over the smaller pipe. The smaller pipe runs down through a hole in the bottom of the grow bed.

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