The PotPro™ Link is one of the newest members of the revolutionary PotPro™ line. Use them with our PotPro™ Platform, Platform Fittings, and Drainage Connectors to create your ideal drainage system. The white outer layer helps deflect light and keep temperatures cooler inside of the tubing, the opaque black inner layer blocks all light which prevents algae buildup in the tubing and helps to keep your system clean. Works as part of the FloraFlex® PotPro™ 16/17mm tubing drainage system. BPA and Lead free Polyethylene