Be confident in your purchase we're an Authorized Simplicity Dealer. How cool is that?!?!? Simplicity 120DC Protein Skimmer, you are going to love Simplicity DC Skimmers. Our skimmers use a controllable DC pump and needle wheel; regarded as one of the best methods to shred air and water to create micro fine bubbles. Our skimmers provide one of the keys to a successful protein skimming: long contact time between water and air. The bubble plate, wedge pipe indicator, air intake adjustment and controllable pump allow you to achieve the best performance for your unique system. Adjustable DC pump speed Small foot print Cone shape design Feed Button Thumbscrew assembly for easy cleaning Easy to read wedge pipe setting indicator Bayonette locking collection cup Collection cup drain with cap Robust build quality