Check the listing for details. DWC Air Diffuser Bubbler Kit with Oxygen Air Pump for DIY Hydroponic Bubbler Buc. Color: Black, Condition: New. Listed at 23.39 USD. This item does NOT include Air Pump. 118 inch (3 meter) long Oxygen Bubbler Tube and parts for DIY fish tank and hydroponic growing use Could be cut and build 2 sets of Oxygen Tube Ring for HortiPots DWC Cloner 24 site or HortiPots Aeroponic Cloner 24/35 site; or just 1 set for HortiPots Aeroponic Cloner 48/70/96/140 site. Could be cut and build at least 2 sets of Oxygen Tube Ring for 3.5/ 5 Gallon Bucket systems. Could be cut and build any size of Oxygen Tube Ring Set for DIY Hydroponic Systems or Fish Tanks. Do It Yourself for whatever you wanted for DIY hydroponic systems or fish tanks If your hydroponic systems or fish tanks are outdoors, please choose air pump specially for outdoors use for safety.