Bean Animal Question

[reacclimating 2 the hobby]

I couldn't find a plumbing thread, but also didn't look super hard being I'm at work.

My overflow is plumbed for the bean animal. Everything works great until I shut my pump down. When I go to start it back up(after feeding or WC) the main line doesn't pull a full syphon unless I take the pvc pipe I have in the sump bulkhead delivering the water to below the surface.

If I remove the pipe it will go directly into the syphon and I can replace it later. Is the pipe from the bulkhead to beneath the water surface too long(10-12" to bring the water 5-6" below the surface)? What else could be the issue?

Can add pictures later if it will help.

 

[chipmunkofdoom2]

The outlet pipe of the main overflow is 6" below the surface in your sump? If so, this is likely the problem. I shoot to have my drains about an inch below the surface of the water level in the sump at most.

 

[reacclimating 2 the hobby]

Thank you, I will try a shorter piece to see if that fixes the issue.