Athosanswered grow question 7 years ago 1. There's a reason non soil media are called inert media (this includes coco), because they hold no beneficial microbe, it does not compost, so it can not support any microbiology. Microbes feed on organic matter, which is what soil is.
2. Yes you are supposed to do feed each watering, with the appropriate EC/PPM level according to your plant current age/development stage.
3. Always get 20% to 30% run off, this is in order to prevent salts from accumulating in the coco.
4. There are supposed to be organic nutes for coco. I dont really know how they work.