At one time Pythium was considered a fungus but scientists have studied the various strains and reclassified it now as a pathogen. Growers know Pythium as a terribly invasive pest that rots root systems and is very tricky to eradicate.
What it does
Pythium attacks the roots of plants...
The concentration of whatever you're applying must be very weak in comparison to a root application, but when applied with care, just watch your plants respond almost immediately! I grow w/ CFL's and i foliar feed with the lights on on prob
in door i go by the book out door i double up. Out door plants tend to eat a little more just keep a good eye on the girls they'll let you know
ps check the ph it is vital