Just a heads up, Fox Farm is not all organic! I'm sure most of you know this, but just letting you know, because this is the organics section of the forum. Big Bloom is the only organic one. With numbers like 0-50-50, its scarily unorganic! Those ratios are ridiculous to feed to your plants. If you are going to use them, like everyone said, start small.
Try BMO out for a nice all organic quick fix solution. You're plants will love it. Try to stay clear of high ratios like that (and all chem ferts if you can help it!).
On another note, I like your name communistcannabis. I'm glad to see other fellow comrades around here (even though I would never call myself a Marxist communist, too authoritarian. I would call myself an anarchist communist.)