How do I know when I should start flushing?

WeedMan2020
WeedMan2020started grow question 6y ago
This is my first ever grow and I was just wondering, how and when can I tell that it's time to start flushing?
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Week 16
Feeding. Schedule
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Gelato93weed
Gelato93weedanswered grow question 6y ago
Usually 1-2 weeks before with a drainage of at least 20-30% to understand it depends on you more white hairs 30% more psychedelic sativa 0% white hairs more indica so more body-focused.
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