You might be new to this tonyf, but with advice like that your on the right track :)Hi, I am only new at this so take my advice with a grain of salt, but one thing that stuck with me I remember reading somewhere was "never dose anything you can't test for" kinda makes sense. So I would try and wait till you can get the test kits then at least it will be easier to to tell how much to dose, because you kinda don't want to get it wrong.
If I am correct the A,B,C is the main 3 Calc, Alk and MG and would be really hard to guess the amount.
Only my 2c worth.