I must just be plain lazy!! so i have my salt tak set up about 6 ft off the ground so i can gravity feed all of my water changes. In order to make the process as simply as possible i thought i woudl rig up a screw feeder into a bucket of salt to carry salt up and into my SW reservoir. However, this seems to be a very dificult task. I would like the screw to be made of plastic for obvious reasons. Has anyone made anything similar? On the same priciple as the EHEIM automatic feeder.