ive used jobes before and the stuff STINKS ! im also trying to go all organic with dry ads. but just mix vermiculite, peat moss, perlite, 1:1:1 with some worm castings and bat guano. i currently have 8 white widows in 3 gallons with fox farm ocean with some bat guano throw as top spread and works pretty well and thats under 2 600w vespars