I was in Value Home Center tonight and saw Miracid. I thought they didn't make it anymore, as I hadn't seen it for a while. I read the back of the box, curious as to how it lowers PH, and all I saw was the usual MG ingredients, albeit 30-10-10. How does it lower soil PH as the box claims? On a side note I have a Hydranga, and an Azalea that aren't doing so well. I just guessed that the soil wasn't acidic enough and spread some Espoma sulfer around them. My other shrubs seem to be doing fine. I hope I did the right thing.....we shall see.