I use General Hydroponics Floranova series along with their recomended supplements such as Floraliscious, Diamond Nectar, Florasheild, and Chi foliar spray. They give you a chart as to when to use what and how much. All those supplements can get expensive, but at least they are tried and true. I think that the Floranova series is also made for the marijuana cultivator where as the flora series 3-part is for any plant grown hydroponically. There is probably a few added goodies to Floranova that are good for a pot plants' particular needs. You are pretty much guaranteed that their "recipes"
will work, and that there will be no incompatability issues when mixing all the things together as directed. For the amount you spend on nutes and supplements, you get your money's worth in return and peace of mind that you haven't left anything out.

For the low-key personal consumption grower like myself, I grow 3 to 4 plants at a time yeilding about 8 ounces per crop which will last me plenty from crop to crop. I always use high-yeilding feminised seeds, preferably sativas for the "up" energetic buzz. I use a "Baby Bloomer" Hydro set-up (5 gal. resevoir) This is what I use and recomend.......

1 quart Floranova series "grow"
1 quart Floranova series "bloom"
1 pint Floraliscious "grow"
1 pint Floraliscious "bloom"
1 gallon Diamond Nectar
1 gallon Florasheild
1 pint Chi foliar spray
1 pint FloraKleen

this will cost about $175 total but will last me for almost a year (3-4 crops) and yeild about 2 pounds of premium cannabis. It is a great regimen utilising the best of both organic and non-organic nuriets. Pay a little more for that peace of mind, and don't hesitate to email General Hydroponics with any questions you have. They respond promptly.

I dabble in the use of "Hygrozyme" as well. It seems to do well for the plants. It eats dead root matter and turns it into food for the plants. It may not be neccesary, but I've heard all good things, and my last crop (AK-47) was great and I used Hygrozyme.