Helloelliee
Aquarium Advice Regular
Okay so any filter I've ever had has come with the filter of course which has the carbon in the pad...and a black square thing. I don't know what that's called. It's just this rough black square that has always come with every one of my fish filters. Well I got a new filter kit and it came with everything except for the black square pad thing (again sorry I don't know what it's called) Just wondering if anyone knows what that thing is called and if it's okay that my new filter didn't come with one. Are they necessary? BTW my new filter is a top fin 60. I have a 55 gallon tank. Thanks!