So last night I did a deep cleaning on all my equipment including my aqueon 75 hob
filter. I pulled the pump apart and pulled the magnetic impeller out, it was covered in algae slime. Removed all slime put it all back together put it back in the tank and now it is making a lot more noise than it used to. It does seem to be flowing a lot more water so I'm wondering, is this what it was like when it was new and I just don't remember cause it's been so long since I gave it a real deep clean or could it be going bad?