I want to try using baking soda (sodium bicaronate) mix for moss control in a 4 gallon tank sprayer - how much should I mix in per gallon? My plan is to use this to use in addition to an initial application of Moss Out (area with heavier moss) & Turf Builder Triple Action For Moss Control for general control. I'm going to wait a few more days to see the results of my initial application before applying. Thoughts on mix amount.