It is by far the best soil mixture Gold Label made so far.
Gold Label has sampled new soil mixes, blended them and tested them for a long time to get this mix.
It contains among other things, worm castings and bat guano compared to the regular Gold Label Special Mix Soil.
Selection of soil/medium is a very important and crucial part for the results of your cultivation.
With poor soil/medium you won't get as good results as you can get by choosing a good soil/medium.