This is my first post. I've decided not to continue with Mineral Springs due to cost. I've been reading about adding borax and baking soda (I already add Muriatic acid and cya as needed). I can figure out the baking soda, but if I'm putting in a bag of Renewal weekly (pool about 30,000 gallons) how much borax does that equate to on a weekly basis? Or do you not do borax weekly like the Renewal? Thanks much in advance!