Yeah LAB ferment. I’ve got a mother shuttle pH around 2.8 I’ve just been letting down what I need into barrels and putting the sulfates in with no food I started off feeding them and fermenting for a month but the application rate had gone up I needed more. I ended up letting LAB down and putting sulfates in for a couple of days or over night with no other food source. Not sure if I’m getting chelation with it held in the cells in that time or just reduction from the low pH? But it’s moving the needle on the sap tests same as the month long ferments. The cobalt trial I just dropped 100 grams of cobalt sulfate and 1k of MAP into a bucket with 10L of LAB overnight. I’d like to try cobalt and iron together next year. I wasn’t aware of cobalt selenium interplay and I haven’t been testing for it. That’s interesting though we’re also known selenium deficiency on the coast there a fella over here doing lots of trials with foliar selenium and stock health seeing pretty good results. I put my trial and sap results up in the chelation forum the other day.