Product review (4 stars): Good but need careful and thorough installation
Good and cheaper replacement. What I didn't expect was the abundance or flush of water with black granules on them. I thought at first i made a mistake in installing it since that never happened with the more expensive brands i used previously. However, this is the second time i've used this and the same thing happened.

Now I just expect them and make sure I get rid of more than the recommended amount of water to throw out when installing.