I grow in soil and my advice has been strictly for soil growers. If you look at what I put in FAQ it mentions that manufacturers are making a killing off products that are basically just molasses. They repackage and sell it under fancy names like carbo this and load that.

These products are for soil growers.

Yes someone else did give some info out that implied it could be used for just about anything. Where did they get the info? I don't know. They aren't sharing any more nuggets of wisdom with us.