Ok so I tested this out while I was waiting for forum validation.
Auto siphon air tight.jpg
It failed cause I used too small of tubes for both the inlet and outlet for the canister, I plan on purchasing the correct parts some time next week so I can give it another go.
I have begun to think it will not work though, cause of when the water in the grow beds get to low the pipe would start to suck air, unless the siphon was higher then the bottom of the tube in the grow bed.
I was planning on having an array of grow beds run on just the one siphon, and a bigger canister, if a pump or two went out maybe it could keep the beds all at the same level as it went through its cycle, just at a slower rate.
Any ideas or suggestions?