DIY overflow problem

[Lgw]

So, I just set up a 6 tank system running on a sump, and one of my overflows keeps losing siphon every 10 minutes or so, any ideas on why it's doing this? I figure it's letting air in some how but I have no idea how or where

 

[Lgw]

I think I had the air bubbles from the sponges too close to the overflow, it's been going good for about 30 mins. Any input is still welcomed

 

[tomomothy]

Sounds like you got it figured out. I imagine you have the outlet under the surface of the water so the overflow actually only sucks in water

 

[wednesday13]

You can hook up some aqualifter pumps through check valves in each overflow to prevent any future problems.

Sent from my SAMSUNG-SGH-I747 using MonsterAquariaNetwork App

 

[Lgw]

I left it running through the night with no problems thanks for the tips!