Noob here, I have a hot tub coming in a couple of weeks and have been reading as much as I can prior to it's arrival. Regarding Borates in your water, I have seen mention several times that they are somehow beneficial to your SWG system, or that they make it more efficient. Can someone here explain a little more? I spec'd the hot tub to come with SWG, and if borates will make it more efficent or somehow more reliable I am game.