Using rhizotonic late?

Rhizotonic question

Its my first grow and its coming along nicely, however my 2 autos are on day 22 and my other younger one is in on day 9. I just got my hands on some rhizotonic and wanted to know whether its worth using any now on them and if so whether as a foliar spray or mixed with my usual feed (using biobizz grow) and dosage. Thanks

Shits Expensive.. Save it for Stressed plants and seedlings. Store it in the fridge. Very Alkaline when you mix it. pH carefully.