Nutes come in A/B or g-b-m formats to make the concentrates more stable and prevent on-shelf preciptation of iron, in particular. The multiple parts also allow for some customization of solution to cultivar. Fer an example, google ( GH Flora " Lucas formula".

Advanced does a couple of lines of basic nutrient, and then a whole bunch of additives- Their Sensi A/B product is a good place to start. They also do a line of pre-mixed powders- The package contains little envelopes, labeled for each week over I think a 10-week cycle, one or two weeks veg, then flower. Each packet does like 20-25 gallons in your res- so for a 50 gal res, you would add two packets of " Week 1".

If you want a one-bottle answer, look at Botanicare's Pure Blend Pro. You will probabley need to add CalMag, but maybe not.

Also GH BioBizz.

If you're just starting, I'd go with the GH Flora 3-part, or the Pure Blend. Lots of folks have used them, plenty of info available.

If you go w/ Advanced, prepare to slowly dial in your room. Results are fantastic once you're there, but you'll wanna get the basics down, then start adding one thing at a time. Or go with their pre-mix.

I really really like the Canna Aqua series, but to max it out you're looking at like 7 or 8 components over a crop cycle.