I wouldn't do that in hempy (Osmocote Plus hempies, obviously, are different critters altogether), just like I wouldn't do so in a DWC hydroponics setup.
In soil... HtH does a plant growing outdoors in the
ground get flushed, lol? Most people seem to think it's important. Some, however, have given the matter thought and still decided not to. I would guess that a lot of bud the latter produce is of the finest kind, lol. If you're supplying the plant what it needs, when it needs it - and no more - then why would you "flush" or switch to plain water? If the plant is still alive and still growing (or still FLOWERING) then it has to be using
something, right? So I'd guess this thing is entirely situational in nature.
I did once come across some bud that was nearly fireproof, lol. IOW, you couldn't even keep a bowl lit that was being quickly passed back and forth amongst four people, let alone a joint that I was trying to smoke solo. Nasty, nasty, and did I mention nasty?
I saw it sparking! And, of course, there was no "fine white ash" - it was dark gray, black, and... chunky. So, yes, some people seem to have issues :rolleyes3 .
Maybe a person is using a nutrient that doesn't allow them to adjust the various levels, perhaps a one-part where it's all or nothing in terms of which specific elements they're adding. Or maybe the follow the "keep adding more until you burn the sh!t out of your plants, then back it down one notch" strategy.
I will state (for the record, your honor
) that when we visited, I thought your bud tasted just fine. No nasty and no fireworks. (Good buzz, too
.)
I've seen plenty of statements over the years that amounted to "I fed her, and she really took off!" They tell me that the respective plants were lacking nutrients. A plant shouldn't grow in spurts :icon_roll . Don't think of it like a person who eats one to three times per day, lol, think of it like a machine that gets constant use. A generator, maybe.
Those are my thoughts. You know what you're giving your plants - and you know what they then give you in return, lol. Let that be what helps you decide this question for YOU.
Er... I'm also not in favor of giving one's plants an extended dark period before harvest. I like to harvest immediately following a
normal dark period. I just don't see any benefit, scientifically speaking. I know some disagree. It's difficult to have two successive grows that are IDENTICAL other than changing ONE variable, so it's hard to really determine these kinds of things beyond a shadow of a doubt. Even clones from the same mother are not likely to be 100% identical - and that's if they're taken at the same time, let alone if the cuttings were taken months apart. The genetics can be assumed to be the same, sure. But I think of it like when I used to race; that is to say, one tiny little difference off the line can mean a significant difference at the end of the ¼-mile. Additionally, one
assumes that a grower will add to his/her knowledge base and experience more or less constantly. That's a BIG factor, IMHO. And, just like when I was racing, a person can do a thing and "feel like it helped" when in actuality it did no such thing. That seemed more likely to happen the more money the racer spent on the thing, LMFAO... If the person spent ten bucks and half an hour, and is asked if there was an improvement, their response might have been, "Eh... <SHRUGS>." But if they spent $1,400 and five days and were asked the same thing, it was not terribly uncommon to hear, "Well, I haven't been to a dyno or had it on the track yet - but <WHISTLES> I can sure
feel the difference!" (The irony is that sometimes they "felt the difference" because it bogged, then accelerated, then sort of laid down, meaning they ended up slower - but they suddenly had a moment where they felt more acceleration (because they weren't accelerating like they had been).) That hobby could take over your life (and wallet!) even worse than growing cannabis can. But it was the most fun I'd ever had outside of a bedroom, lol. OtOH, cannabis isn't likely to see you end up 272 miles from home, in a parking lot, begging someone who knows how to both spot you a crank (plus a million other "little" things) and completely rebuild your engine for you after you pushed just a wee bit too hard and
drove over parts of that engine. (And the phrase covering that is, "Welcome to the DotC club, ha ha ha!" (Driven over the Crank))
Cannabis - Cheaper than racing!
Hey! Thanks for the humorous mental image of you going out and leading a bunch of cannabis plants around on leashes. I didn't expect to smile today. If I could draw, that would have provided the meat for a comic strip that I could have gotten into a cannabis publication for sure, lol.
I've been thinking about this lately, and I've noticed that I'm beginning to let them go light in veg, not exclusively in early veg. Mine seem to be responding positively to this. 
