I've read a bunch of threads and looked at a bunch of pictures but what is a
Herbie setup in a paragraph? Thanks!
Herbie setup in a paragraph? Thanks!
Herbie???
- Thread starter jandb
- Start date
Typical overflows have both water and air entering the overflow pipe. The mixing of those 2 cause the unpleasant gurgling noise you heard.
A herbie overflow aims to overcome this noise problem by only allowing water into the overflow pipe.
Basically you have 2 overflow pipes in the tank, one longer than the other. The shorter one have a ball valve connected to it at the bottom.
Now you just slowly close the ball valve to limit the amount of water entering it until the entire shorter pipe is submerged.
Because it is impossible to limit the water flowing in the shorter pipe to be equal to that of the water being pumped back from the sump to your tank, water in the tank is going to slowly raise up. Here is where the longer pipe comes to play. It simply allows the excess water flow back into the sump. Because the shorter overflow is handling most of the water, there will only be a small trickle entering the longer normal overflow.
A herbie overflow aims to overcome this noise problem by only allowing water into the overflow pipe.
Basically you have 2 overflow pipes in the tank, one longer than the other. The shorter one have a ball valve connected to it at the bottom.
Now you just slowly close the ball valve to limit the amount of water entering it until the entire shorter pipe is submerged.
Because it is impossible to limit the water flowing in the shorter pipe to be equal to that of the water being pumped back from the sump to your tank, water in the tank is going to slowly raise up. Here is where the longer pipe comes to play. It simply allows the excess water flow back into the sump. Because the shorter overflow is handling most of the water, there will only be a small trickle entering the longer normal overflow.
Thanks. Do you have to have 2 bulkheads in each overflow or can you T and 90* a single pipe keeping one lower than the other?
Not to disagree, but your drain should be able to handle 100% of the flow. The emergency overflow is just that, emergency. I have 100% of the flow in my tank in the drain line. Also, a durso in this case doesn't do anything.
Here's a picture of my overflow. That is a 1" bulkhead. The partition appears that it wouldn't allow enough room for another bulkhead. The additional divider is a little lower than the weir. The space between it and the overflow is only about an inch. It is there because there is an opening at the bottom of the overflow on that side. Any ideas?
Sorry, here is the picture. It's tough to see but the partition is on the left side of the picture. I am thinking I would need to use a Durso overflow. I am concerned about the nose though. My wife won't be happy if it makes a gurgling noise. Any thoughts?