Bell Siphon Overview
There are several designs for Bell Siphons. Here are the pieces of one type of Bell Siphon.
Bell Siphons work well when a good design is implemented. They are a source of irritation when the relationships, dimensions, and cleanliness change the Siphon action.
Too much water flowing into the grow bed and Siphon may never stop, growbed stays full.
Too little water flowing into the grow bed and the Siphon may never start, growbed stays full.
Correct water flow kept within a comfortable range and Siphon usually always works.
Affnan explains it well in his YouTube video “Affnan’s Aquaponics – Help Us Go Green”
Closest USA pipe dimensions:
4 mm = 5/32” for air hole for siphon vacuum break
15 mm = 1/2”for bulk head and Stand pipe
25 mm = 1”for Funnel, 38 mm = 1 ½”for maximum Funnel size
60 mm = 2 ¼”for Bell
Bell Siphon college report
“Construction of Automatic Bell Siphons
for Backyard Aquaponic Systems”
Automatic Watering for Global Buckets (like EarthBox®)
Bell Siphon Experiments