mag pump blowing bubbles

[125g]

My mag 12 pump is starting to blow microbubbles into the tank is this a sign of it going out? none of the fittings are leaking so i dont think it is sucking air in... should it be taken apart and adjusted or could it be something in the pvc return pipe?

 

[braddo]

It could be on the return. I've had a loose joint on a return before and instead of leaking water it sucked in air causing microbubbles.

 

[125g]

It could be on the return. I've had a loose joint on a return before and instead of leaking water it sucked in air causing microbubbles.

ok cool i'll double check those and report back