This is a optimized Skimmer Replacement for common JBL Aquarium Filters. Based on http://www.thingiverse.com/thing:44850/ Big Thanks for the universal hose coupler! I have modified the coupler to match my needs: It will fit on the original base-part, so it is easily interchangeagle for cleaning purposes It is longer in size (about 80mm) It has little wider slots for Water inlet. Due the wider slots and the longer size the speed of the incoming water will be reduced, so cloquing will be reduced. Most of my changes should be customizeable due editing the .scad file. Unfortuanally the generated objects are not manifold, so please use a repairing service like: https://netfabb.azurewebsites.net/ Or (the better way) correct the .scad file and post it here :DI added a repaired .stl file which is manifold and should give you no problems due printing. My print settings: Sliced with Slic3r Perimeters:2 Infill: 20% Layer thickness: 0.25mm Material: PLA