Hey fellas, I recently had an LED in coco. There are definitely a few things to know about it before you jump in, but I think it's a great soil substitute with very promising results... just watch your pH and ppm's, and especially your ppms if you're using LEDs. I have a few friends who are using this stuff right now manufactured by Botanicare specifically for coco, CNS17 Coco Bloom | Botanicare.

Also, here's an invaluable .pdf link to something Advanced Nutrients put out the other day entitled the "pH Manifesto". It goes over a lot about growing in coco, and just about every other medium, and keeping your pH in the "sweet spot" range. It's a bit a of read (20 min) but well well worth your time. Cool to see you guys using this awesome sustainable resource for a medium.

Here's the pH Manifesto link

http://growersunderground.com/pH_Manifesto.pdf

-A