I am running a 65 litre buppleponic & dwc system with flora series nutrients.
My question is, at what stage should I consider flushing the plant to reduce nutrient uptake before harvest? I have read anything from 1 week to 3 days. Thanks in advance.
one of the good things about hydro is you can flush for less time so you can be more precise right ? Even just one day is enough, really, one day to three days works... i'm following someone on here flushing a hydro grow for three weeks... but yeah one day to three days... you can tell when you're ready when the plant kinda gets forced in senescence you'll know you're ready. hope this helps ! 🚀
For hydro it is 2 or 3 days. For coco 1 week and for soil 2 weeks. The question is when to start? After the calyxes have swelled and the pistils start retracting, then you flush.