I just purchased this particular HOB
skimmer and after installing it, was amazed by the performance of it. Just now though, I turned off several things in order to do a water change and when I turned everything back on, the skimmer was not functioning properly...
There were BARELY any bubbles in the chamber and the pump is making some weird, humming/rattling noise that comes in waves
Needless to say, without those bubbles, the skimmer is doing nothing. Nothing aside from putting a ton of micro bubbles in my tank...
Any advice on what could be wrong with a 3 day old HOB
protein skimmer after a water change?