Using it with the Whisper Aeration pump, Sanitary filter, and 1/4 beverage tubing. The tubing that comes with the pump is about 1/8, it fits into the inner diameter of the sanitary filter on one side, the 1/4 bev tubing fits on outer diameter on other site of filter and that goes to the metal tubing, does not require a clamp. My fermentations have started faster and ended more complete since starting to use. I run for 45 minutes prior to pitching yeast. A little clumsy to assemble without touching the stone, takes 2 wrenches to tighten on the stone. I recommend assembling, immerse in starsan to sterilize the tube, then dip the working end in boiling water for a few min.