need help/closed loop

[fishamajig]

I am in the middle of setting up my closed loop system for my power heads, I have a mag 9.5 and three lock line fittings - 3/4 with a 3/4 return . I am getting mad air bubbles coming out of my heads, why is this happening and is there a way i can fix it?. I think I have eliminated the possibility of an air leak, also how do you prime your pumps? :notsure:

 

[dogstar]

Really dont have to prime a mag 9.5. Check intake ( leaving tank going to pump ) fittings. Nomaly bubbles in tank from CL is because of tiny leak in intake line sucking air into pipe.

 

[golfish]

How are you feeding the pump, bulkhead or U-tube?

 

[fishamajig]

here is a quick diagram

 

[fishamajig]

sorry it got cut off but you get the idea