It's great for over powering pathogen out breaks like fusarium, Pythium and Phytothera in hydro.
If I recall the active "myco" is streptomyces which is plant symbiotic and kicks some disease ass from my experience.
Its a perfect weapon for dealing with an aggressive root rot out break or as preventative medicine to help avoid problems.
Just avoid using it with other inoculants as it's (Mycostop) nature is to dominate it's environment which includes other bennies once it gets established.
www.agbio-inc.com/mycostop.html