How To Use Progressive Web App aka PWA On 420 Magazine Forum
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Depends what ur growing in. I'm doing coco so I started right away. In soil it's different. When they say week one that means after the first w or 3 sets of "true" leaves show up.Shows on that to start feeding it in the first week! I've never heard of people doing it like that I though you started on 2nd or 3rd week.