so I am getting more serious about my testing/dosing regime. I was using Ocean's Blend 2 part and I was reading about Randy's 2 different recipes and decided to by the BRS 2 part supplies because Randy mentioned in other posts that they use his recipe. I planned to use recipe 2 because I am regularly above 8.3 and frequently above 8.4 during the day on my PH according to my apex. I was mixing up the 1 gal jugs and I noticed that BRS provides soda ash, not baking soda. Can I use soda ash for recipe 2? their instructions are, I believe, for recipe 1. I am not a chemist or mathematician so the math is making my head hurt...please advise!