I agree with diabollical,
You don't have enough knowledge to deal with the inherent problems coco brings much less the probs you'll get as a first time grower. i don't get why new growers even play with coco. I would get a minimum of two grows down before I even tried it.
It's ph neutral and can fluctuate wildly and can give headaches to even advanced growers. Chrissa
Learn how to grow in soil and then advance, K.I.S.S.
Keep it simple stoner!