Bean animal issue

[Engloid]

Is that a u pvc pipe with a 1/4" hole drilled into it?

It's similar to PVC. It came with the synergy shadow overflow box. Yes, it's a hole drilled in it.

I'd recommend you fix yours asap, even if you just pull that plug out. Otherwise, one power outage and you'll flood the house.

 

[ReefReady9]

It won't flood. It'll make a mess next to the sump in the tank stand from all the air bubbles by the emergency can handle it just fine. I mean, that's the point of using a bean animal style overflow right?

If I leave that hole on top unplugged, it sucks air in through there and I get air bubbles in the siphon. Based on everything I've read it shouldn't be that way. I'm going to try putting a small hose that goes into the water in place of that plug. Might be enough just to vent it. Thanks for your help!

It's similar to PVC. It came with the synergy shadow overflow box. Yes, it's a hole drilled in it.

I'd recommend you fix yours asap, even if you just pull that plug out. Otherwise, one power outage and you'll flood the house.

 

[Ratherbeflyen]

Is that a u pvc pipe with a 1/4" hole drilled into it?

That's what I did with mine, except I made my hole a little lower than the top. It's completely silent and never had a problem with it.

 

[Blitzie]

I am not sure why you would need holes int he primary siphon line. I do not and never have a problem with it starting.
I read and followed these instructions http://www.beananimal.com/projects/silent-and-fail-safe-aquarium-overflow-system.aspx
My primary and secondary overflows are constructed identically except the secondary has the hole drilled into it per the instructions above

Here is the secondary and you can see the waterline in the picture and the hole that turns the secondary into a primary if the water level was to rise

 

[ReefReady9]

I am not sure why you would need holes int he primary siphon line. I do not and never have a problem with it starting.
I read and followed these instructions http://www.beananimal.com/projects/silent-and-fail-safe-aquarium-overflow-system.aspx
My primary and secondary overflows are constructed identically except the secondary has the hole drilled into it per the instructions above

Here is the secondary and you can see the waterline in the picture and the hole that turns the secondary into a primary if the water level was to rise

I have something similar for my secondary. I want to do the same for the primary. Thanks!

 

[Engloid]

I am not sure why you would need holes int he primary siphon line. I do not and never have a problem with it starting.
I read and followed these instructions http://www.beananimal.com/projects/silent-and-fail-safe-aquarium-overflow-system.aspx
My primary and secondary overflows are constructed identically except the secondary has the hole drilled into it per the instructions above

Here is the secondary and you can see the waterline in the picture and the hole that turns the secondary into a primary if the water level was to rise

Fact is if you have are up in top of the siphon line, you will not be able to flow the full diameter that the piping will allow. If you don't have a vent there you likely have air trapped in it. Yes, it might blow the amount that you want to put through it, but that doesn't mean the air is not there, or that you are able to run the maximum possible. There is no drawback to drilling the hole in the top, so why not do it?

 

[Blitzie]

I am no mathematical or physics expert but
Isn't the purpose of the Bean Animal or Herbie drain to be a siphon and that is what makes it silent. Also because it is truly a siphon should it not purge itself of trapped air?
If you start a siphon in a piece of plastic tubing there is no trapped air is there?
Until recently when I changed my return pump I was using a reeflo dart running wide open which is in the 3000 gph area and never had a flow issue and it was absolutely silent.
By adding a hole are you not breaking the siphon and essentially using a Durso type of drain and if there is any noise this is probably turbulence and yes at that point the flow would suffer.

 

[Engloid]

So without the hole, how are you getting the air out of the line? I guess I'm a little unclear. You made the point that a true psiphon would have the goal of eliminating air from the loan, but then it seems like you're advocating for not drilling the hole and leaving the air trapped in it. You do understand that the siphon will remain even if you pull that elbow off of the pipe entirely, correct?

 

[ReefReady9]

So without the hole, how are you getting the air out of the line? I guess I'm a little unclear. You made the point that a true psiphon would have the goal of eliminating air from the loan, but then it seems like you're advocating for not drilling the hole and leaving the air trapped in it. You do understand that the siphon will remain even if you pull that elbow off of the pipe entirely, correct?

It has a plastic screw. I open it manually to vent it then close it. If I remove the U, it does not siphon completely because it creates a whirlpool that sucks in air. I might try a regular U pipe and drill a tiny hole since the plastic screw is probably 1/2", maybe bigger.

 

[Engloid]

It has a plastic screw. I open it manually to vent it then close it. If I remove the U, it does not siphon completely because it creates a whirlpool that sucks in air. I might try a regular U pipe and drill a tiny hole since the plastic screw is probably 1/2", maybe bigger.

Your water level should be up above the hole. Then if it sucks can anything it will be water. Without the holes, you can slowly have microbubbles accumulates up in the top of that pipe and it will slowly reduce flow race until you begin having more and more running down your secondary pipe.

 

[ReefReady9]

I tried the hole but it ended up sucking air so I tried making the outlet closer to the surface. I ended up making it about 1/2" from the surface and it works fine now. Thanks everyone for your help!

 

[Engloid]

I tried the hole but it ended up sucking air so I tried making the outlet closer to the surface. I ended up making it about 1/2" from the surface and it works fine now. Thanks everyone for your help!

The hole should really be at the top, and water level should be above it, so it cant suck air.....but if its working like it is, I would watch it a while to be sure.

 

[George Lopez]

Ok so I don't run a bean but a Herbie style with no u's just straight stand pipes with a screen on the siphon and i have no noise that so ever. Is the u that is causing all of this problem really necessary? Just asking.

 

[ReefReady9]

Ok so I don't run a bean but a Herbie style with no u's just straight stand pipes with a screen on the siphon and i have no noise that so ever. Is the u that is causing all of this problem really necessary? Just asking.

If I don't have the U it creates a whirlpool and sucks in air.

 

[Engloid]

Ok so I don't run a bean but a Herbie style with no u's just straight stand pipes with a screen on the siphon and i have no noise that so ever. Is the u that is causing all of this problem really necessary? Just asking.

Its not. It can quiten startup though.