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.