I added the powder, under and over the seed before covering it with the jiff 'soil', and it grew and developed much faster and with much more strength!! I recommend it to everyone, as almost all of the seeds died, even the Fast Buds and with this method I have had 100% success in the birth of the seeds!
1st step
Soak the jiff until it is saturated with water, squeezing it to drain some water, but not all.
2nd step
open the hole and put Great White Shark powder from Plant Success, placing it in it, put the seed in and then put some powder back on top of the seed, cover the hole with the soil from the jiff.
3rd step
put the jiff in a maternity ward and let it hatch