I have a bunch of old rock that was stored away for years and now I want to re-use it. I was told it’s ok to use lower salinity and a cheaper salt mix just for cooking it. I’ll be using my Brute can, pump and RODI water on the back porch (to keep the stink out of the house). I expect it to take 3 months or so to get the NO3 and PO4 down to safe levels. What’s the LOWEST salinity I can get away with? All other parameters aren’t important right now. Just want to clean the rock (without acid, bleach or other chemicals). Looking for Lowest Salinity. Thanks. P.S. I’m not in Idaho anymore. I’m in The Sunshine State.