Ace - correctI also do not grow in coco, but it is my understanding that it is a form of hydro because there is NO food nor water storage capacity in it. Therefore, the plant needs food and water every day. The wetness is not an issue like it is in soil, it is just another way to grow. It is basically just like growing your plant in a full hydro setup. The roots that the plant makes are made for that situation. I've looked at quite a few journals from coco growers, and I'm pretty sure they aren't sacrificing anything. Plants are adaptable in this circumstance.
Coco/NFT Grower