If you can give me advice on my filter you'd be a lifesaver. I have an API filter in a tank from Petco, all purchased new and used without incident until today. I moved my fish to clean the tank and when I plugged everything back in, the pump hums but doesn't create any motion in the water. I disassembled every part I could and wiped out a lot of gunk from the inside but still no dice- sound, which suggests the electricity is working, but nothing else. I'm not sure if there's something I can do to fix this or if I should get a new filter, in which case I'd also welcome advice on that. I've attached pictures of the offending apparatus- I'd like to figure it out asap so I don't have to worry about my fish!
Thank you so much!