Okay, so I did some more research from the sites you have me plus I read about it on GLA, but I'm still really confused...so you just choose random liquid ferts and mix them together into bottles? That's really confusing to me. Like for example one of the paragraphs says, "Example of 1 liter bottles-Pour into bottle #1, 59 grams of K2SO4, 65 grams of KNO3, 6 grams of KH2PO4 and 41 grams of MgSO4. Pour into bottle #2, 80 grams of dry Trace Element mix. Fill up both bottles with soft water to the 1 litre size and shake. Wait over night until dissolved." So they just picked a bunch of chemicals and mixed them up at different amounts? How do you know how much of one fert to use? For example it says "59 grams of K2SO4, 65 grams of KNO3, 6 grams of KH2PO4 and 41 grams of MgSO4." How did they know to pour in the exact amounts of 59 grams for K2SO4, and then 65 grams of KNO3 and so forth. Sorry if that didn't make any sense at all. I'm really dumb when it comes to ferts and would like the best for my plants, it's just taking some time to learn up on all the best options!