That stuff needs soil bacteria to decompose it into usable fertilizer and is designed to supplement soil grows. If you need organic, General Hydroponics has a line of nutrients that will work. If you need dry powder and organic, I have no idea.

If you don't need organic, Masterblend's 3-part formula is your best bet as it's super cheap and effective. If you want a 1-part, Maxigrow is good.