Can anyone please tell me how much Tropic Marin Part A I have to dose based on my current BRS CaCl dose (90ml per day)? I am using the BRS 2-part with Tropic Marin Part C with good results. Unfortunately, BRS stopped selling their CaCl in pouches and now only offers plastic bottles or a huge bucket. As I am trying to reduce my plastic use I plan to change to Tropic Marin Part A, which is sold in cartons. Thanks.