What source of sulfate are you referring to Magnesium sulfate, calcium sulfate for example?
Other than those 2 which are common to use epson salt and gypsum contain sulfates. Which are not in our blends
We have been tested through A&L labs for all elements to register with state and do not see levels of sulfate to make a difference in availability
Just wondering if everyone is used to stabilizers in liquid organic vs ours which is dry and has no stabilizers