If it's your first go round I'd go with a 3 part like general hydroponics or blue planets elite 3 part or their even their 2 part... just for the fact that if this is your first go round a few of the fox farms products are organic/semi-organic which is usually a good thing but it's also a chance for shit to go up in flames if your res temps creep up beyond 72-75... not that your plants won't suffer with a strictly synthetic line but you'll have a better shot at recovery if haven't added anything organic that's gonna start a root rot chain reaction, again not that it can't happen with synthetic nutes but it's less of a slime/brown sludge factor if/when it does go bad... that and fox farms is a bit over rated... if you were rocking soil wanted to use their bottled line I'd say go for it but there are better hydro lines for a lot less $ imo... I bought 4-5 fox farm products in my time, I still have 3 almost full bottles from more than 5 years ago that I can't force myself to throw out....