Working the plant. This is called plant manipulation and stimulates different reactions within the plant. Always keeping the nutrient recipe at a level of 800 ppm.I use 4 different nutrient product to stimulate my plants. Theres a liquid formula that is a base nutrient NPK percentage ( 7 - 4 - 11 ) for all the stages and this can be use alone for 4'' vegetation, week C & D. As soon as the plants are transplanted in 8'' pots I start stimulating the flowering process with 5 days of vegetation (week E) an add a powder nutrient of NPK percentage ( 10 - 30 - 20 ), week E, G & H. Pre-Flowering is week G & H. This is where I have free space in one of my rooms and start giving my plants a 12h/12h lighting cycle until the actual flowering room is free. Theres actually 2 stages flowering (week 1, 2, 3, 4) and fructification (week 5, 6, 7, 8). For the flowering stages its recommended to have a equal part of phosphor / potassium and a low nitrogen level. Something in the vicinity of an NPK percentage ( 3 - 12 - 14.5 ) or in NPK ratio of ( 1 - 4 - 5 ). This is week 1, 2, 3 & 4 and using two powder nutrient of NPK percentage ( 00 - 52 - 34 ) and ( 00 - 00 -50 ). In the fructification stages, this is where the buds get there mass, its better to have higher dosage of potassium while lowering the needed amount of phosphor and nitrogen! Again in the vicinity of an average NPK percentage ( 3 - 1.5 - 30 ) or in NPK ratio of ( 1 - 0.5 - 10 ) at week 6. This is week 5, 6, 7, & 8 and using mostly one powder nutrient of NPK percentage ( 00 - 00 - 50 ). 7 - 4 - 11 = Liquid Formula 10 - 30 - 20 = Jack's flowering 00 - 52 - 34 = Potassium Monophosphate 00 - 00 - 50 = Potassium Sulfate The exact dosage per Litre are in my nutrient recipe link. If you don't understand fell free to ask me any question!