This is the 2 part i'm using. I'm not sure would it be the same as AF 2 part that why i'm keen to find out, to add on the current 2 part doesn't come with powder form which make AF product more cost economical..
https://www.marinedepot.com/Two_Little_Fishies_C_Balance_Two_Part_Solution_Calcium_and_Alkalinity-Two_Little_Fishies-TL1191-FIADTP-vi.html
This is what i got from AF website.
https://aquaforest.eu/en/how-reef-mineral-salt-works/
The use of NaCl free salt is not so common any more, and application of the Balling method is often limited to 2 or sometimes 3 of its main components. This approach will probably not cause any problems for several weeks or even months, but in the meantime the chemical reactions that take place in the marine aquarium will lead to a deficit of trace elements.Balling “Two Part” or “Light” is gaining in popularity, but the truth is that the old, but revolutionary original method was much more effective when it comes to maintaining stable water parameters. Regular use of NaCl free salt is highly recommended to help address ionic imbalance issues in the long run.