No

@@JCrowe86 Actually, yes. I do not have the emergency shut off valves, but this system is what I ended up going with and it works perfectly without. I wanted the shut off cables, but my Ltd and hubby said it was overkill. I got overruled. Still wish they'd have gone with them. But oh. Well. No issues so far. *knock on wood that it stays that way.

@@nataliemuncy2574 Justin above was right, you need these valves to perfectly dial it in so it's absolutely silent...which is the whole point. Yes water will drain, why wouldn't it, but to make it silent it needs to be dialed in....using said valves.

Are there any plans with dimensions available somewhere for this setup please? Especially the height and size of the drilled holes and the box.

@David Gray I highly recommend the B.A style overflows by ‘Modular Marine’. They’re reasonably priced and quality acrylic fab. They also include everything you need including diamond hole saws, drilling template etc. Cheers

@@Val_Halla777 I have since been using this setup and it works awesome. Very quiet and self adjusts to small changes in flow using the secondary Durston, which you can eliminate flow through, by adjusting the gate valve on the full siphon. I'm using an Exotic Marine Systems overflow kzbin.info/www/bejne/iHu0foaje8-WY7s and it works great, the weir and overflow are totally silent and the large long slots don't clog. My only issue was snails going over the falls and into my sump. I have added a primary screen of perforated PVC with 3/8" holes to keep critters out. It has turned out to be a so far, perfect system for my tank. I actually built it into the background of the tank using pond foam and paint. I left no straight line edges and it has a 3 dimensional surface just like the rest of the background and is all but invisible.

I think it’s 1-1/2 inch for 3 pipe

Yeah

nah it must be broken if yours does this there is a phone number on the back you can call for support