In my experience...not necessary.
If used as a foliar spray, it dries to a sticky mess, and clogs the pores in the leaves.
Also can attract insects like gnats, ants...

Keep it simple, till simple doesn't work.
Rusty Trichome Reviewed by Rusty Trichome on . Mineral water? Watering with mineral water until flowering? Direct CO2 to roots? y/n :hippy: Rating: 5