Seedlings dont need nutes, if it wasnt growing you probably didnt give it enough light. LEDs arnt the best to grow vegatation w/ by the way, the technology just isnt up to par yet, you'd be better off with some CFLs, thats my opinion, unless you want to go all out w/ HPS and MH lighting, they require a ballast and create an ass-ton of heat, so be prepared to shell out some $$$(though your results will be more favorable). Your LED light is way too far away from your plants, way too far... thats why they didnt grow
As for nutes just go with the reliable Advanced Nutrients brand, they are quality and not too hard on the wallet.

Dude, maybe you should start off in soil, you dont seem to grasp the concept of hydroponics yet, not even the basics. You cant half-ass it with hydro man, u gotta know what ur doin. You didnt even know you had to check the pH of the solution? pH of nute solution is crucial for your plants to survive. You need to figure out how to do something beofore you attempt it, or else you'll just blindly fail. Read a book about hydroponics or look online for an ebook, it only took me a few days of casual reading to understand what the general processes are behind a successful hydroponics system. Your pretty lost dude, you may want to order a book on growing hydroponic marijuana, they have some pretty sweet literature out there on the subject.
Good luck on your venture, but try to invest a little more time and thought into what your doing, i dont think you even understand whats going on. And there are tons of step-by-step guides out there for what ur wanting to do, u gotta do some research, even though its not particularly fun.
KingSloth Reviewed by KingSloth on . new hydro set up 6 plants I have a hydro system with a bubbler a led lamp some blue bar that stays in the water don't really know much so need help..I purchased the system and led lamp in eBay and I got the seeds from amsterdamseeds I try this out before and the seedling will grow but it never leafed cause I never knew about the nutes so I wanna make sure I get it right because these are my last seeds :( ok I was looking at some hydro nutrients kit for 40$ since I'm kinds broke right now that seems best for me but will Rating: 5