Nutri-stim is made with both ethanol and several non-ionic surfactants. I've read that to take advantage of the ++cation effect such as in Calcium 25, we need to dissolve with strictly ionic organic solvents (no Tween / poly 20). I think the non-ionic solutions are fine for fertigation, but may provide less benefit through foliar application than the ionic preparations.
Incidentally, home mixing with KOH, methanol, MEK, can be dangerous and the injury consequences are permanent, so maybe better to buy a commercially available product. Alfalfa tea is unlikely to contain much
Triacontanol, if any. Unless maybe it's left long enough for fungus to colonize and digest lipids? With sufficient fungal biology in the growing media, and given enough time for the breakdown process, amended alfalfa meal can provide some effects, but not to the degree foliar spraying will.