Help with bell Siphon setup

[Ray Lundelius]

i’m brand new to aquaponics although I’ve had a koi/goldfish pond for around 12-15 years. I’m trying to incorporate my pond into aquaponic system in my greenhouse. My big question is how long of a drain pipe can I have to have a bell Siphon work right. Are there limitations on the length? 

[Ray Lundelius]

Never mind, got it figured out. 25-27 feet of drain pipe and all is well.