Microbubbles

[steeevo66]

Just changed sump and changed to external pump, all of a sudden I have micro bubbles. No baffles but also shut skimmer and looked in sump with flashlight around bulkhead to pump and there are no bubbles at all in the sump. Could it be the fact that the pump is now external??

 

[reef_junkie092]

could just be that it is new.. after a few days it will get that ''slime'' coating and may go away