GMSgrowsanswered grow question 3 years ago I use an all in one and have had great success with it. Floranova series and Massive bloom formulation thrown into the mix in flower. Has kept every strain I have ever grown with it nice and healthy. Everything they need, very concentrated, lasts forever, just add until ec is reached and your good to go. Use to use the 3 parts series, tried most, but floranova is so much easier to work with and so effective, I will never use anything else. not unless they stop making it. One jug will last soooooo long and save you hundreds of dollars, compared to all the crappy watered down nutrients...If you don't believe me, AMS said that was a record bud on my MOAB grow. They have asked to use the pics. Only thing is, it isn't totally organic. It does bring out some great tastes in your final product though, if you use the massive through bloom, the tastes are fantastic...