the liquid karma is like a catalyst that "jumpstarts" the organic ferts, at least that is a very simplified way of saying it.

alot of people use super thrive so it must be pretty good.

i can tell you 1 prob your gonna have with the ferts already, well not really a problem. i bought the ff three pack as well on my 1st grow. the thing is the grow big and tiger bloom are not totally organic so it doesn't take much. the big bloom on the other hand is 100% organic so the proper dose is much bigger. you will run out of big bloom well before the others. i had to go back to the store 3/4 of the way through the grow and buy the 1 gal jug of big bloom. not a big worry, just givin' you the heads up. i have since bought gal jugs of all the ferts.