| 20090277849 | BIOLOGICAL CLEANING FILTER APPARATUS AND SYSTEM FOR AQUA-CULTURE - A filter apparatus may be provided. The filter apparatus may include a multi-port valve; a strainer coupled in flow communication to the multi-port valve, wherein the strainer may include a conical portion and an attachment portion extending away therefrom; a diffusing column coupled to the strainer and coupled in flow communication to the multi-port valve; and an equalizer column coupled in flow communication to the strainer. | 11-12-2009 |
