Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best power filter

This is a great low maintainence filter that will save you money too. Other filters always require a "tune-up" which mean taking apart every few weeks to get them flowing properly again.Runs quiet considering the volume of water it pushes. Also has a tab underneath you can adjust to level it.The sponge can be re-used many times before replacing which saves money and restores proper flow. Straight foward design makes it a no brainer to use.Buying re-usable media bags will also save money over pre-filled media( Buy bulk carbon/zeolite for this ) This is like the AK-47 of power filters.