Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Great system
Review: This is the best and easiest bio filter I have ever used! No parts to break as you would have with a bio wheel. This eliminates the old under-gravel filters which did work very well but required you to break down your tank every other year to clean it out. My water is beautiful. It's Clear with just a little yellowing from the hunk of driftwood I have in the tank.
