Yesterday, 01:25 PM
Running plain water for the last week or two before harvest is supposed to improve taste, but the evidence for it is thin and some growers now skip it entirely. In coco or hydro a short flush at least clears salt buildup, which is a measurable benefit. The harvest prep notes on https://calmcbdseeds.com present both sides fairly and suggest a shorter flush for organic soil since the microbes are already handling nutrient release. I still do a week out of habit, but I no longer think it is essential.