Our 1Pot & 1Pot XL Modules come with everything needed to add more pot sites to an existing AutoPot XL System! 1Pot Module Includes: (x1) Grommeted 1Pot Tray & Lid (x1) 3.9 gal black pot (x1) AQUAvalve5 (x1) 39″ of 3/8″ pipe (x1) Root Control Disc (x1) 3/8″ tee for connecting existing systems (x1) ½”-3/8″ tee for connecting to existing systems 1Pot XL Module Includes: (x1) 1Pot XL tray & lid (x1) 6.6 gal pot (x1) AQUAvalve5 (x1) 3.3ft of 3/8″ pipe (x1) Root Control disc (round) (x1) 3/8″ tee for connecting existing systems (x1) ½”-3/8″ tee for connecting to existing systems All AutoPot USA modules are now equipped with the new AQUAvalve5 (gray/black with black collar), which requires 3/8″ tubing/fittings. If you have the AQUAvalve4 (black with red collar) and need assistance in expanding your system with 1/4″ tubing/fittings, please contact AutoPot