WHat are you talking about? I have a gate on every line in my tank and just stated I gate off the return as opposed to the main siphon. If you are going to attempt to counter someone at least read first.
I have researched as well as discussed with Herbie. I have tried to meet up with him as well as he is not that far from me.
That said I have run all types of plumbing over the years. Durso, gurgle buster, herbie, and bean. I prefer bean due to it not being as fickle It truly is a set and forget since you have the third pipe. That said the herbie is just as safe and for me needs adjusted about once every six months.
You can see the multiple valves, manifold, and everything else in my build thread. I wont say you need to research per say but you should be leary and ready what one posts before you attempt to counter...
Regardless this is not the thread to discuss drain types or the specifics of such. Feel free to PM me should you wish to continue this back and forth so as to keep this thread clean.