This is a major step forward in hydroponic media technology. Coconut fiber offers many unique advantages - it maintains a larger oxygen capacity than the finest rockwool. It offers superior water holding capacity to rockwool, a real advantage for intermittent irrigation systems. Coconut fiber is not a biohazard or disposal problem like rockwool - it is completely natural and not environmentally aggressive as rockwool is.
Coconut fiber contains organic compounds which other hydroponic media lack.
Coconut fiber also offers a measure of protection against root diseases including fungus infestation. Coconut fiber is a completely renewable resource, unlike peat moss which is rapidly becoming depleted from overuse. This blend is rapidly gaining favor with the biggest Dutch growers when used in Dutch Pots - a simple but powerful technology. This lower grade of coconut fiber is becoming more and more available at garden supply shops and is fine when blended with good potting soil - not so good for hydroponics.