closed loop bubbles.

[salineh2o]

How is it possible that I am getting bubbles in my closed loop system??

Help!!

 

[otolith]

I would bet there is a leak on the pre-pump side that is creating a venturi and the bubbles. Take a peak at the connection into the pump and from the tank and see if it takes care of it.

 

[ulua56]

What kindof pump do you have ?Pump could be cavitating, reduce output, see if that helps

 

[salineh2o]

It's a dolphin 1200. and there is no adjustment for flow.

I may have to add a valve after the head.