I am going to do the Humboldt Nutrients Drain To Waste Soilless recipe with the Master A&B, as soon as I run out of my nutes after this grow. I was thinking of doing their Organic recipe(and who knows, I might change my mind by then and go with the Organic recipe), but as of right now th A&B seems to be what I'm going with. I currently use Dutch Master Gold and a heck load of Goodies. Too much to list on someone else's thread, but u can check it out here------->Click on me I'm using my hydro stuff in soil/soilless right now. I've got some pics of my grow on that link also. ♥I was thinking the exact same thing, these are two different companies. I use Humboldt Nutrients Organic Line for soil and master A & B for hydro. I've had good results with both.