Originally Posted by Thesmilingfish
I looked at that and it's really confusing, where am I supposed to get that stuff? I was just hoping for like a brand that might in combination with some others cover all the basics
The chemicals can be purchased from a local hydroponics store and/or online.
Once you learn the basics of EI, you will realize that the chemicals are much more affordable than commercially available fertilizers, and quite a bit easier than you may have initially thought.