I don't flush, IMO, based on science flushing is a total waste of time. I want my plants to die from it being their time, and dying at peak ripness, not after starving to death for however long! And thats all your doing by flushing. As you deprive the plant of nutrients, what is its number one priority? Right! The Buds! So it transport all the mobile nutrients it can up the plant. Look close at a "well flushed" plant and what do you notice besides the dying plant? The buds still look healthy at harvest! Your not getting rid of sugars in the bud, they make their own and I'd bet it would take another 10-14 days to kill them.
And there are no "chemicals" that will get into your plant from the nutrients. Roots can only pass specific elemental ions into the plant, and H2O via osmosis. And those mineral ions are identical to the ions made available to plants by microlife in soil.
However, I've had people try to tell me the difference between my organic grows and mineral based nutes. With a proper cure, weed is weed, no one could tell the difference. But that's me and I'm not knocking how anyone else treats their weed. I just believe I end with better weed, taken from healthy plants. You don't "flush" organics, right? Why not, the soil is full of nutrients that are the same thing as what comes from bottled nutes?
NPK is only absorbed by a plant as anions or cations, "salts" of the mineral or element needed.
Here's another myth you may have heard. " Too much Magnesium in your buds makes it spark and burn black. No it doesn't. First, most of the mg has been used to make new compounds the plant needs, and what remains is measured in parts per million (ppm ). I want to see someone light a 90ppm pile of mg on fire... So what does cause all that popping and sparking? dead mites and bugs exploding when the water in them turns to steam! Black ash is caused by sugars. A good cure will fix that. It takes 2-3 weeks for all the sugars to break down.
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