Micro bubbles on Return

[BlindZide]

For some reason I am getting micro bubbles from my return from my sump. There is no skimmer in the sump yet. I don't know where they are coming from. I don't see the bubbles in the return line just coming out of the return nozzle. Any ideas?

 

[shesacharmer]

Did you recently do a water change? How long has this tank been running? Sometimes in a new tank, until everything gets coated with biofilm, you will have these bubbles but they tend to go away on their own in most cases.

 

[reepher315]

Did you seal all the PVC on your return line (if you used pvc). I had a small leak in my return plumbing that was causing a lot of micro bubbles. Took me a while to figure out where they came from.

 

[BlindZide]

I am using flexible tubing for plumping. Not PVC. The tank has been running for 24 hours roughly. The tank was running when I grabbed it on Friday night without the bubbles. I set it back up yesterday afternoon to get it going and it was bubbling this morning.

 

[ucdcrew]

There is air getting into your return line. I had the same problem. My leak was in the plumbing inside the tank (I used lock line). I submerged it, and it went away so I sealed it with thread tape.

 

[BlindZide]

There is air getting into your return line. I had the same problem. My leak was in the plumbing inside the tank (I used lock line). I submerged it, and it went away so I sealed it with thread tape.

Checking now, thanks for the response!