There's not much you can buy that will be just 3 weeks worth of flowering, so anything you get you'll be using for your next grow as well.I have a question I just got back from the grow store looking for enough nutes to get me though another 3 or 4 weeks. They had Advance nutrients but only in the 1 liter bottles and that's to much as I do not plan on using AN my next grow. What I need is Micro, Grow and Bud candy. Can anyone give me advice as to what I should get to replace these nutes, something I can use next grow. The guy at the store kept giving me who knows what to replace the nutes I need but again large bottles big bucks and I do not know if they will carry over too next spring. I would appreciate any help I can get. Just do not want to use AN again on my next grow. Cannot go through amazon as they take to long. I learned a new lesson plan ahead.
Now's the time to consider what direction you want to go with nutrients. I mentioned couple of sponsors in my post back here, and there are many others as well. And prices will vary wildly!