I'll post this again that I did on another flushing thread..
flushing doesn't work the way it's regurgitated on these forums.
1. You cannot remove "artificial fertilizers" from the plant.
2. You can flush (leech) salts that are built up in the soil.
3. Wether you use synthetic or organic ferts, the plant doesn't give a shit. Organic ferts are slow release and arnt readily available. microbes break that down into an inorganic form which is usable for your plant. Synthetics are immediately available for use by your plant.
4. Wether you choose to flush or not, your dry and curing process is what affects the flavor of your product.
5. Idk why any of you would choose to starve your plant from nutes a couple of weeks before harvest. That is one of the most critical points in your plants life and you want to stop feeding it?
6. Last but not least, flushing will starve the root zone of oxygen, think about what happens when you overwater. No oxygen to the roots and your plant starts to die. The benefit from that is that you will actually begin the curing process while your plant is alive.
https://www.rollitup.org/t/the-truth-about-flushing.409622/
Read that and take from it what you can, or ignore it and keep doing what you believe is best for you