Bell Siphon

Bell siphon that I have used Fusion 360 for the 5th time... so it is basic. Be aware that there is a left hand thread involved for a good reason. Use PVC pipe to make the height to what you need. Also needs 10mm pipe to do do the break siphon thing. This design works on my hydroponic system... but let me know if you are having problems.
The new HydroTwo is a different approach to the Bell Siphon design. With the hydro2, the outer PVC tube needs a slot cut in it on the bottom. The idea is that you tune the flow rate of the bell siphon by aligning the slot with the slot in the 3d printed part. The more that the 2 slots align, the more water can flow through inner exit pipe. With this design, the siphon tends to break far easier at when it is meant to and it is far easier to adjust when you have your bed loaded up with clay balls. I will put up another top bell end that does not include the hose attachment.