Bean Animal stopped working

[um_fan5]

External overflow using EMS...worked fine for 2+ weeks
Lost power yesterday for a few minutes and when I came home I notice a gurgling noise!
Restarted the return pump and no siphon the the primary drain.

Started to thing something clogged the line (snail).
Drain about 80g's of water so I can move the tank and have access.
Removed everything and no clog?

Added back the water and started back up...no siphon.
Place a finger over the secondary drain hole and nothing.

Primary is about 1/2" from the bottom, secondary is about 1 1/2" from the top (with a hole) and emergency is about an 1 from the top of the overflow

Not sure what else to do??

 

[ReefSlice]

Sometimes buildup on your return pump or plumbing changes the flow rates, try closing the gate valve on the main siphon a bit at a time to see if you can get the right flow rate for a full siphon again.

 

[um_fan5]

Sometimes buildup on your return pump or plumbing changes the flow rates, try closing the gate valve on the main siphon a bit at a time to see if you can get the right flow rate for a full siphon again.

Thanks...tried that also!

 

[um_fan5]

The problem was the hole in the secondary drain was too small.