Review on 🌀 Aqueon QuietFlow Filter by William Stewart

This was a great quality air pump but I bought this to convert my aquarium's current filter to a foam filter. I figured a sponge filter would be about the same or quieter apart from the bubbles it creates. The pump emits a constant, loud and annoying hum. It might not be that bad, but my tank is in a quiet room about 4 feet from the main area. It's much more noticeable than the old filter. I'm giving 4 stars because I didn't really know what to expect or what I was getting myself into.