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BeanAnimal failsafe overflow
- Thread starter seasalt
- Start date
There's a few that will chime in that have them.
They're also called a "herbie"overflow.
They're also called a "herbie"overflow.
No you can't go over the rim of the tank.
Both the beananimal and the herbie overflow are the same idea.
2 holes vertical over each other.the lower one is used to regulate water exiting the DT via a ball or gate valve.
The upper hole is an "emergency"hole in case the regulated hole get blocked some how.
The ability to regulate the exiting water greatly improves the noise as it can be closly matched to the return pumps GPH.
Both the beananimal and the herbie overflow are the same idea.
2 holes vertical over each other.the lower one is used to regulate water exiting the DT via a ball or gate valve.
The upper hole is an "emergency"hole in case the regulated hole get blocked some how.
The ability to regulate the exiting water greatly improves the noise as it can be closly matched to the return pumps GPH.
Actually a "bean drain" uses 3 holes, and I agree, there is no way to set up a bean or a herbie without drilling.
The biggest advantages to bean/herbie set ups are that they can handle much more flow than a comprable sized (main drain bulkhead size that is) duroso/stockman drain, with a herbie/bean there are virtually no bubbles/microbubbles going into the sump, and herbie/bean drains are virtually silent.
The biggest advantages to bean/herbie set ups are that they can handle much more flow than a comprable sized (main drain bulkhead size that is) duroso/stockman drain, with a herbie/bean there are virtually no bubbles/microbubbles going into the sump, and herbie/bean drains are virtually silent.
I would have to agrue that find sir... I ran a herbie style overflow with my HOB overflow
I had a Eshopps dual overflow model and just set it up like a normal one and it worked perfectly 
When John says virtually no bubbles and noise he really means it, it's amazing... Only thing that is quieter IMO/IME is a sumpless tank
Question,why 3 holes?
I've only seen the 2 hole brand.
I've only seen the 2 hole brand.
Herbie is 2 holes, 1 siphon drain, 1 dry back up.
Bean is 3 holes, 1 siphion drain, 1 dry back up, and 1 vented siphion (essentially a duroso) that normally has just a slight trickle going through it. Bean is the same as a herbie, except by adding the duroso type back up it prevents it from needing occasional adjustmets to the valve. Herbie's usually need the occasional adjustment, bean is "set and forget". Also bean essentially has a double back up (because when the water level rises the vent line in the vented drain gets submerged and turns it into a 3rd siphon) adding another layer of safety.
http://www.beananimal.com/projects/silent-and-fail-safe-aquarium-overflow-system.aspx
Scroll down for pics
Bean is 3 holes, 1 siphion drain, 1 dry back up, and 1 vented siphion (essentially a duroso) that normally has just a slight trickle going through it. Bean is the same as a herbie, except by adding the duroso type back up it prevents it from needing occasional adjustmets to the valve. Herbie's usually need the occasional adjustment, bean is "set and forget". Also bean essentially has a double back up (because when the water level rises the vent line in the vented drain gets submerged and turns it into a 3rd siphon) adding another layer of safety.
http://www.beananimal.com/projects/silent-and-fail-safe-aquarium-overflow-system.aspx
Scroll down for pics
Last edited by a moderator:
Ok,I see the difference.
Thanks John.
Thanks John.
newenglandreef
Non-member
I used a bean, I have four pipes on one side of a 90. What's the Q?
nickyblase
Non-member
re-starting this thread. Hey guys! 
Been a while.
I am starting back up before too long, and when I set the 125 up again, want to do something along these lines. I have dual corner overflows, so I have a total of 4 drilled holes. How would I do something like this with the best benefit? I am planning on doing a basement sump (if that matters for the sake of this particular discussion). If there is a primary, a backup, and a siphon, how many of which should there be if I were to use all 4 holes in the overflows for drains and did all of the returns over the top of the tank?
Would it make more sense to stick with the 3 and use 1 of the holes for a return with the other returns going over the tank rim?
If anyone has pics of how they did it in a RR (rather than a HOB overflow), that would be very helpful. Having a hard time wrapping my mind around this.
Thanks!
Been a while.I am starting back up before too long, and when I set the 125 up again, want to do something along these lines. I have dual corner overflows, so I have a total of 4 drilled holes. How would I do something like this with the best benefit? I am planning on doing a basement sump (if that matters for the sake of this particular discussion). If there is a primary, a backup, and a siphon, how many of which should there be if I were to use all 4 holes in the overflows for drains and did all of the returns over the top of the tank?
Would it make more sense to stick with the 3 and use 1 of the holes for a return with the other returns going over the tank rim?
If anyone has pics of how they did it in a RR (rather than a HOB overflow), that would be very helpful. Having a hard time wrapping my mind around this.
Thanks!
It gets discussed in the bean thread on RC. IIRC He reccomends filing one overflow with sand and then using the larger hole in that overflow as the dry emergency (with the sand acting as a DSB), and the open channel and duroso in the other overflow. I think you would use one 1" as the siphion, one 3/4" as the duroso, and the second 1" as the dry emergency.
cilyjr
Chris
i would use the 3/4 as the siphon since the siphon can handle a great deal of water. and since you would be restricting the pipe anyway why not go with the smaller one. also you want the durso to handle alot of water if the siphon clogs and a 1 inch can handle alot more then a 3/4...and i agree using the 1 inch on the other side for the emergency drain is the best idea. if you dont want to use the overflow for a deep sand bed you would need to drill a few holes in it near the bottom and a few in the middle so water does not get in there and stagnate.
