Help with durso overflow

[liquidcowboy]

I just set up a new 90 and it came with a durso pipe setup. The pipe has 2 holes, 1 on each side near the top. It seems to be sucking in air and not creating a full siphon an causing micro bubbles everywhere. Can anyone help and explain how this works or anyway to fix it?

Here is a picture of the overflow

 

[milesofreefs]

tagging along. about to set up this drain system whats the best way to do it?

 

[tommy tomato]

Dump the durso and do a herbie

P.s. that's how a durso works. 1/2 air 1/2 water.. You need bubble traps or filter socks to deal with micro bubbles.

 

[liquidcowboy]

Dump the durso and do a herbie

It's my understanding a herbie needs 2 drain pipes, correct?

If it can be done with 1, how do you implement it?

 

[SaltyReefs]

Is it the adjustable type? looks like it. either way make sure its all the way down. You might also have a small return pump and it's not dumping enough water into the overflow.

 

[liquidcowboy]

Is it the adjustable type? looks like it. either way make sure its all the way down. You might also have a small return pump and it's not dumping enough water into the overflow.

I've tried it all the down and it is now all the way up a. It's the same. I have a mag 18 return so I don't think that's the issue lol

 

[SaltyReefs]

I've tried it all the down and it is now all the way up a. It's the same. I have a mag 18 return so I don't think that's the issue lol

Is your water level to the two holes on the side? Is your pump plumbed to a valve to control flow?

 

[liquidcowboy]

The water level is above the side holes but somehow air is still being sucked in

 

[tommy tomato]

The water level is above the side holes but somehow air is still being sucked in

It is sucking air from the hole on the very top. That's what it's supposed to do.

 

[liquidcowboy]

It is sucking air from the hole on the very top. That's what it's supposed to do.

Then how does it create a full siphon? It is only maybe a half siphon at the moment.

 

[tommy tomato]

It's my understanding a herbie needs 2 drain pipes, correct?

If it can be done with 1, how do you implement it?

You could, but you wouldn't have an emergency drain. Which isn't wise for a full siphon system. You can't pipe your return over the top?

 

[liquidcowboy]

You could, but you wouldn't have an emergency drain. Which isn't wise for a full siphon system. You can't pipe your return over the top?

No, tank is already full and running and I would have to completely redo all the plumbing

 

[tommy tomato]

Then I suggest a filter sock

 

[SaltyReefs]

Is this a new setup? What kind of sump do you have? If it doesn't have baffles with a bubble trap, ofcourse the return pump is going to suck it into the DT. In my 90g I don't have a problem with that. When the water drains, it comes down that's Maybe 4-5 inches below the water level in the sump with bubbles, but the baffles and the bubble trap takes care of that. Maybe add a filter sock to help break up the bubbles.

 

[SaltyReefs]

The water level is above the side holes but somehow air is still being sucked in

That's how it works. I also IMHO think your pump is over kill. Plumb it with a gate valve and turn it down some.

 

[tommy tomato]

That's how it works. I also IMHO think your pump is over kill. Plumb it with a gate valve and turn it down some.

+1

A durso never creates a full siphon. Air is part of its design. It pulls air down thru the hole on the top and it travels down the center of the pipe and the water travels down the sides. The holes on the side are the siphon break. The object of a durso is to allow you to keep your drain wide open where you would have to adjust a full siphon by gating it down. The wide open pipe is not as prone to clogs so an emergency drain with a durso isn't typically used.

The air and the noise is why the durso standpipe is hated. So you have to either learn to love it or replumb lol

 

[liquidcowboy]

+1

A durso never creates a full siphon. Air is part of its design. It pulls air down thru the hole on the top and it travels down the center of the pipe and the water travels down the sides. The holes on the side are the siphon break. The object of a durso is to allow you to keep your drain wide open where you would have to adjust a full siphon by gating it down. The wide open pipe is not as prone to clogs so an emergency drain with a durso isn't typically used.

The air and the noise is why the durso standpipe is hated. So you have to either learn to love it or replumb lol

I don't like this lol

 

[SaltyReefs]

The water level is above the side holes but somehow air is still being sucked in

+1

A durso never creates a full siphon. Air is part of its design. It pulls air down thru the hole on the top and it travels down the center of the pipe and the water travels down the sides. The holes on the side are the siphon break. The object of a durso is to allow you to keep your drain wide open where you would have to adjust a full siphon by gating it down. The wide open pipe is not as prone to clogs so an emergency drain with a durso isn't typically used.

The air and the noise is why the durso standpipe is hated. So you have to either learn to love it or replumb lol

I don't like this lol

I personally don't feel that my system
Is loud although it could be at times. If I clean the top of the over flow by removing coralline from the grill water flow better and quiter. I don't have that crazy slurrrrrrping noise. Either way I hope you got enough info on this. Maybe ear muff are the way to go with the noise. Lol! As for the bubbles..... Filter sock.

 

[liquidcowboy]

I personally don't feel that my system
Is loud although it could be at times. If I clean the top of the over flow by removing coralline from the grill water flow better and quiter. I don't have that crazy slurrrrrrping noise. Either way I hope you got enough info on this. Maybe ear muff are the way to go with the noise. Lol! As for the bubbles..... Filter sock.

Thanks for the info! I think I may go the herbie route and def a filter sock.

With a herbie, do I need a valve on the drain pipe or can I run it without?

 

[SaltyReefs]

Thanks for the info! I think I may go the herbie route and def a filter sock.

With a herbie, do I need a valve on the drain pipe or can I run it without?

Yes you need a valve to control how much waters its dumping.