Do you realize that the soil you have your plants in will hold the chemical fertilizers it provides for six months? Unless you plan to have your plants in that soil for seven months plan on smoking some harsh herb my friend. Why not transplant to a better soil such as roots organic or ocean forest. Also it has a time released fertilizer which will only provide x amount of nutrients at any given time. Marijuana is a finicky plant sometimes it wants more sometimes it doesn't, what do you do then? Sometimes it wants less but has more forced upon it because it's there what do you do then? Just from a guy who's gone that route before, starting with a good quality base will go a long way toward future success. But do hope everything works well for you my friend. Peace!