tlranger, did I say hydro was cheaper? If so, my bad, I know it's not necessarily cheaper.

Weezard, "solid state hydro," pretty funny. don't know it, never did it, didn't realize it... on the oxygen, that is.
Powder ferts are the ones that used to come in boxes, but the companies that make this stuff have all pretty much switched to ziplock style bags. The brand names foxfarm, whitney farms, and dr. earth are examples, and are useful in potting soil as they are designed for indoor and container growing as they contain the bacteria and fungi necessary to break molecules down and assist roots with nutrient uptake. These are ferts that are in powder form, not crystal or liquid. They are usually 100% organic or close to it, as they pretty much have to be because chemical ferts will kill the beneficial bacteria that are placed in the fert to begin with.

Growlie, not bashing your choice to use DWC. It's a good method. It's easy when you understand a few critical details to watch over. best of luck.