m0useanswered grow question 8 months ago It can feed the microbes in the medium but the plant does not absorb it out of the box.
I find anytime I have used it that the springtails explode and molds flourish. Can be more problematic if anything if not kept in check.
Less is more, so light feedings if you care to use it. 1 teaspoon at a time every other week.
Good Luck!