Never heard about it, never used it. I am using Biobizz allmix/ lightmix . Or iam mixing my own soil and iam very happy with the results. I use 3 Parts Humussoil, 3 parts Peatmoss, 1Part Perlite and one Part Vermiculite. You can see the Mix into my GrowCaps Diary ( i think in first Week) Its a very PH stable, fluffy watersaving Soil, iam Happy with it. You have to buy one time an amount and having for a long Time GOOOd Soil.