I tired for 3 weeks to get the Bell Siphon System to work, redid the design a dozen or more times. I even jack hammered through the bottom of my GB and the side of my FT and tried another drain set up. I could get it to start & stop but never to fire, without it firing my GB would over flow.

So my answer is 100% YES, my very 1st design took me 20 minutes to build and have it up and operating. From there I spent about 4 hours tweaking it to come up with a Pipe Siphon that has never got struck at the end of the drain cycle, leaving my GB dry and allowing all your plants to die. It has never fail to fully engage or fire on the drain cycle, so it has never allowed all of your water to over flow my GB which would do major water damage and leaving my fish in little to no water.

Even if I had finally got the Bell Siphon to work my confidence level would have been so low I would have a hard time sleeping, working, just doing anything for fear that it would fail.