The FloraFlex¬ FloraClip 2.0 easily transforms your FloraCap¬ from a top-feeding unit into an automated top-feeding system. Now simply clasp the FloraClip over your 1/4 inch OD tubing (instead of threading it through the opening) and clip it to your preferred location on the FloraCap¬. Then sit back and let your FloraCap¬ do the rest! We recommend you use (2) FloraClips per FloraCap¬. Dishwasher safe and reusable. BPA and lead-free plastic.