ReefDose Tube organizer clip (3 units)The ReefDose Tubing Organizer Clips are also a real bonus, allowing you to anchor the lines along the way from your ReefDose doser to the dosing point in your sump or back of your aquarium. The clips snap open to accept four dosing lines, and then close to keep them secure. Just place a few at strategic points along the tubing path and theyll keep your tubes from dangling in the way or getting snagged while you work in your stand or cabinet. Features