Chuck, thanks for the link. I had actually already read it a few days ago too :nodd, but it's a large set-up for pre-treating, and I'm trying to do something small, with electric pumps, to pre-wet salt mainly. It doesn't seem theres many guys that have done this before. Right now, I'm focused on getting a pre-wet setup for the 575. What I'm thinking now is a dual nozzle setup, one on either side of the chute, running off a 50 gallon tank and electric pump. I'm gonna take a ride over to the local sprayer supplier here and see what I can come up with. The main goal here is to get the rock salt working better, faster, and hopefully use less of it. Too many times I've dumped way too much salt on a lot to have it just sit there and do nothing, then the sun comes out the next day, it burns off quick, and there's complaints about excessive salt residue. So I want to figure out a way to prewet the salt as I'm spreading it to give it a little kick start, so it starts working right away, without the help of the sunlight.