I'm an indoor grower but I use those nutrients. I start the open sesame as soon as I flip so I would assume that when your daylight drops to 12 hours a day you would start. I use it until I can see buds start to form and then I switch to beastie blooms through the flowering until I start to see the hairs retracting and then I switch to cha ching. I don't feed according to the chart, I use a lot less quantity but I mix it in almost all feeding unless I see nute burn. Hope this helps.