Loud over flows

[colesjensen]

My pipes that take the water down to the sump constantly go up and down and it is really loud. Does anyone know how to do this.

In this picture the the water goes down to the blue line and then back up to the normal level.

 

[bubbaque]

It is doing it because it can't keep up with the flow. The water level rises and then gets a full syphon and then drains back down. I fixed mine by lowering the flow on my return pump. Some people will say make a bigger hole on top where your tube is but that didn't help me.

 

[colesjensen]

It is doing it because it can't keep up with the flow. The water level rises and then gets a full syphon and then drains back down. I fixed mine by lowering the flow on my return pump. Some people will say make a bigger hole on top where your tube is but that didn't help me.

It's as low as it goes right now. I'd like to increase the flow but I can't until I get this figured out.

 

[bubbaque]

I had to set mine as low as it would go also. This is how much flow a durso can handle if you google it.

• 3/4 inch - 350 gallons per hour per bulkhead (unconfirmed) (1325 liters per hour).
• 1 inch - 600 gallons per hour per bulkhead (2275 liters per hour).
• 1.5 inch - 1,500 gallons per hour per bulkhead (5675 liters per hour),

 

[bubbaque]

I ended up taking out the durso and putting a herbie on mine because I was tired of the low flow.