Quick and easy, I've a plant very close to being flushed. However, I think she could do with more cloudy and amber trichomes.

She's set for harvest at around day 80, she's around day 70 today. If I flush her, will this stop the trichome production and maturing or will they continue to develop through the 10 day or so of flushing?

Secondary question, I use run off water for flushing, should I be using tap water and/or add any calmag or pure water only ok?