It's suppose to be as good as my roots exculrator so since I use most of Fox farm products and love them I get good results so it is on my list as soon as I run out of the roots.
I would have gotten it first but had no idea on my first real order of nutes it was even for the same thing as roots exculrator.since purchasing doing more reading many people use both in the organic sections of growing.
Mycorrhizae is cool also, I use great white at seed starting and transplanting I feed liquid karma on water days to keep it happy.
I've just gave stuff a try till I've found what works for me it's all about what you can afford and what works for you in your grow.
I use ffof soil also and so far I love it some don't like I said works for some not for others.