Hydroponics Video - Propagation

has anyone seen this video?

He talks about getting the CF level of water (for soaking rock wool) to 12 using either a product or a brand of product (I dont know which it is) called "formulex". Can anyone shed some light on this? can I just walk into a hydroponics shop and ask for formulex? it seems like a very general term.. someone set me straight.
spectrum balanced Reviewed by spectrum balanced on . Hydroponics Video - Propagation, by jeffry winterborne Hydroponics Video - Propagation has anyone seen this video? He talks about getting the CF level of water (for soaking rock wool) to 12 using either a product or a brand of product (I dont know which it is) called "formulex". Can anyone shed some light on this? can I just walk into a hydroponics shop and ask for formulex? it seems like a very general term.. someone set me straight. Rating: 5