Growing power mixes compost in with coir for media. I have never heard of this, and in reading on their site the logic makes sense.
Seems like it would be a good host for the red worms too.
Is anyone else doing this? I would think it would tint the water and throw the chemistry all off....might have to look into this some and see if I am not missing an opportunity that I had overlooked previously. What do you all think?