Aquaponic DWC -Deep Water Culture - 3" Air Diffuser, {AS8L}, "THE PROFESSIONALS CHOICE" - by Bubblemac Industries, Inc. MADE LOCALLY; USED GLOBALLY This American Made Air Diffuser is commonplace in most contemporary Aquaponic {AP} builds worldwide. The largest and most innovative AP farms have come to know and trust Bubblemac for proven performance in aeration. The air diffuser pictured is used in Deep Water Culture {DWC} troughs, where horticulture rafts float upon a constantly flowing pool of nutrient-rich water from the fish tanks. Aeration, such as provided by this diffuser, is proven to show appreciable increases in growth and yield at AP farms. The single medium pore air diffuser measures 1.5" x 1.5" x 3" and is equipped with a 1/4" OD barbed fitting. **{Suggested 0.35 CFM or 10 lpm}** For optimal results, use one diffuser per bucket, or one diffuser centered every four feet in a trough setup. Don't settle for the performance of a cheap, blue, imported diffuser for your back-porch AP build. Be A PRO; Use Bubblemac. -- These Bubblemac Air Diffuser Designs are used exclusively by Ryan Chatterson, Aquaponic Farm in Clermont, Florida.