Air coming out of return line

[vegadan1]

Can someone tell me why i would be getting air out of my return line. I have repiped all of the line to the pump. i cleaned the pump and still have air bubbles coming out.

Please give me some ideas???

Thanks in advance...

dan

 

[ostrow]

Details needed.

Pump?

Bulkhead size?

How is it plumbed bulkhead to pump inlet?

 

[reef freek]

sucking drain water into pump feed then the impeller chops them into fine bubbles

 

[ostrow]

Sent a list of recommendations to you. Post here what the results are though....

 

[Tomtopping]

Do you have a siphon break hole drilled into return line? Might be above the water line????

 

[iLLwiLL]

I thought I had a leak somewhere in my return as it would spit loud air bubbles every 5 to 10 minutes. Turned out my locline return outlet was in the perfect spot to get a wave from my gyre pushed into it randomly and it would wind up above the water line for a split second. Just had to move it down around a half inch and it was fine.

 

[vegadan1]

All fittings are PVC glued together
Pump is a Blueline 100 1"X1" with 1 " bulkhead
All pipes have been redone for the sump to pump 1".
If I throttle the pump down some of the bubbles go away and the line gets quieter.
I am going to connect the reactors today and see what happens

No siphon hole in my return.

Locline fittings are submerged

Thanks for all the responses

 

[reef freek]

update....

 

[vegadan1]

Air out of return

Air out of return

Well I figured out that there were to many bends in my piping from the sump to the pump. I eliminated 1 90 and 1 45 and all the air is gone... Thanks everyone for your input!

Merry Christmas!

 

[reef freek]

excellent excellent!