Herbie Confusion

[sawhett]

I am in the process of setting up a new 220 Gal and would like to incorporate the Herbie overflows. I am totally confused, as most all illustrations show the stand pipes in close proximity.
This is a standard tank with 2 corner overflows,2 drillings per overflow. Do I place the valved and emergency standpipe in one corner? Place a 3rd overflow with a return in the other? Just getting ready to start plumbing this and at a loss how to do this.
Thanks

 

[TruReef]

One valved and one emergency in each overflow, return over the back is how I did it. Don't join the two valved overflows, keep them separate.

 

[ganjero]

You need 2 holes per each Herbie overflow (one siphon drain and one emergency drain) to be safe. I would do Herbie on each corner and the return(s) hanging on the back or some other way.

If you don't like that idea you could do one corner as a full Herbie and the other corner as a half Herbie with a valve to make a full siphon. If you do this you need to be careful and make sure the emergency drain can handle the full overflow amount in the case of a very unlikely scenario where the two siphon overflows fail. I would not recommend doing this.

 

[discocarp]

I did it the same- both valve and an emergency drain in each overflow, then the return over the back. Safe and silent!

 

[ca1ore]

I hate having pipes come over the back of my tanks, so I configured my 265 with one of the corner overflows as a herbie and the second as a return/durso. Not as silent as a dual herbie, certainly, but as long as I don't push the durso it is pretty quiet. You could also setup the second overflow as a siphon, but just dial it back so that there is flow through the weir but the levels stay high.

 

[SeaIsle]

I have a 220 with 2 corner overflows. I did one corner the siphon and the back up and the other corner I did emergency and return. I did have to throw a power head in the return overflow to ensure the bottom didnt stagnate.

 

[Newbie Aquarist]

Here is how I did mine and I have some adjustments to make.

 

[Maximus]

Did you guys use a threaded or slip gate valve?