I am wondering how many people have a grinding noise from the motor and how many are silent?
I bought an aquaclear 20 and it was dead silent except the sound of the water trickling. When I moved my tank I messed up and plugged it in before I filled it with water. It made an awful sound and whole it quieted down with water I could hear a grinding noise.
I bought a new filter and it grinds even louder right out of the box.
I did some online research and it seems this is not an uncommon problem. Some people have claimed to go though as many as three filters all with various degrees of grinding.
I am really kicking myself for messing up my silent one :(
So my question is, how many of your filters are truly silent and how many grind?