i just got my new Eheim 1048 pump and when i put it on it makes this ratteling sound like its air in it ... so i tried like everything to make the sound go away and only got luck by putting it into water
it seems like the pump it taking in air into my loop when its running .. because i puttet my ac ultra pump in the same loot and had it run till all the air bubbles was gone as soon as i started the Eheim 1048 pump i could see air bubbles flowing out from the outlet of the pump so its obvious leaking somewhere ... so my question is, are there anyone that had the same problem that knows how to fix it ?