Version 2 of the 3Dponics Floater works just like the first version, except it has a spot for rubber padding to ensure a better seal. When the water level rises, the Floater blocks more water from entering the reservoir. When the reservoir is empty, the Floater does down and allows more water to enter. Visit our website (https://www.3dponics.com) and join our Google+ community (https://plus.google.com/u/0/communities/111638904033818784260) to take 3Dponics to the next level! Want to know how much it would cost to print this part? Visit https://www.3Dprintler.com and compare prices from today's top 3D-printing services. 3D Printing Settings: -Low quality; 0.2 mm; 2 shells; 10% infill Tested on MakerBot, Ultimaker, M3D Micro and Formlabs