cant stop the micro bubbles!!! I dont know were they can be coming from!
Can air get sucked in from unglued pvc on the return between the sump and the exturnal pump! I have not glued it yet!!!! please help
check where the pvc meets the return pump to the tank and any joints. also if these are new pipes they are going to have to slime up before the micro bubbles can finally go away for good well if thats ur problem.... but check all connections especially the return pump...
also check ur skimmer as well. i dont know your setup but why dont you take some pics and upload it so we can narrow down some problems for you