Getting close to 1st harvest...now foliage is looking crispy at the edges..HELP! I do

I am in like week 6-7 of flowering, under 2,200 watts (1 1k & 2 600's) just noted about 4 days ago after a feed with extra "cha ching" that plants started getting crispy around the edges of fan leafs.
It seems like nute burn, but plants are 4-6 foot and were at 1100 ppm, last feed I* jumped it up to 1200 ppm, next day noticed burning, so I flushed each one with 2x their mix of PH'd 5.8 h20.
It seems they aren't getting better, any suggestions I would surely appreciate it!!!
Thanks so much!

Looks like its just nute burn. Flushing with water probably stunted them a little.
You could add a little piece of an aspirin or some vit B to help them recover, but its gonna take them a few days to get back on track anyways.
Next time remeber that giving your ladies extra nutrients wont make them grow "better" if they already look healthy.

This was a pic of my girls before this happened, all nice & healthy foliage!

well I gave them the extra bud booster stuff because they just don't seem to be as resinous as they should be(my white widows aren't looking all sugary), but my humidity is a bit high, got a dehumidifier (cheapy) and it's keeping it close to 50% only pulls a cup or so a day..
and they aren't fattening up as they should be, on some the hairs are already turning orange-brown and my trichomes are milky, so I am not even sure when to harvest since opinions vary, I think on a few that are turning brown pistils I should probably start the flushing process. What do ya think?
Yesterday I read some articles saying harvest while clear, then another said harvest when they are 70% cloudy 30% amber...*confused* plus I am running many strains with differing flowering periods. Some are under 1K and some 600 watts, etc..

so should I go back to like 900 ppm on their feeding since they didnt handle 1200...they seemed fine between 1000-1100, I can't imagine as huge as they are a 100 ppm should make that big a difference...but this IS my first rodeo, first time I have kept the plants alive till flowering.
Any suggestions greatly appreciated.. I have nitrosime which is sea kelp based, think it has B vits in it, don't have aspirin or plain B vit. product like superthrive, though I do have a fertilizer with B vits in it, it's especially for transplanting (so the bottle reads)
It has an NPK of 3-8-4 and contains vit b-1 .050%, 1-naphthaleneacetic acid (auxin type rooting hormone?).040% and indole-3-butyric acid(also an auxin type plant hormone).004%, it's mainly to avoid transplant shock, but maybe to get the b vitamin, ggive their next feeding a low ppm (600?) with that to see if it helps?

Those plants are no where near ready.they should start fattening up their last week take some close pics of the buds or as close as you can,be able to tell you more.trichome dating is really by taste if you want that heady clear high pick when they are cloudy, body buzz pick when amber. But if you wait till amber they should swell up noticeably.

why would flushing them stunt them for awhile...some things I have read say you should only flush between veg-flower and at the end, others say every 10 days! I was going to stick with the first until I saw the nute burn (which was what I thought it was)

Flushing them now is best since they got nute burnt,need to run at least twice the amount of water through as you have soil let sit couple days then go back to reduced nute program.And are you feeding every time you water?

I do have a bunch of close ups from last week...so these are supposed to be 6-9 week flowering times, I am at about week 6, but a light leak before I moved the grow probably delayed flowering 2 weeks..

yeah those look like about wk 4 you got a ways to go yet be patient young grasshopper lol! and ease up on the nutes they will do better with less than more looks like you may be over watering as well

my leafs around the buds on 4 plants are doing the claw thing bad, even though the amount of N they get now is much lower..dont know why they dont seem to be developing properly..using GH gro-micro-bloom, and I am using the end weeks dose of just micro and bloom (7 ml&-20ml)/per gallon.That last feed I added both some beastie blooms and cha-ching, which brought my ppm to about 1200, they had been given 1000-1100 without any nute burn.Should I give them plain PH'd water instead of nutes for their next feeding, or just lower the ppm and do away with the solubles?

week 4!!! omg this is like week 6-7, but if I subtract 2 weeks for a light leak the first 2..I guess that would put me back a bit...wow..and some pistils on 2 of them are turning reddish brown, trichomes milky..

Well there are a bunch of different factors why your plants arnt looking the way you thought they would.
The bud booster isnt going to boost anything if your plants dont need the nutrients, thus this is why they burn when you give them too much.
Here is my suggestion:
Start adding 2 tbsp of molasis and a spoon full of bee pollen or sucanat to your water to help increase sugar production in your plants.
Lay off the waterings a little. You want your plant to get right at the point where it starts to wilt from lack of water, before you give them some water.
These two suggestions will help swell up your nugs and increase resin production by increasing your plants own sugar production.

After looking at your pictures, your plants arnt done yet bro. I think your confusing "hairs" and trichromes.
The hairs will always turn brown, or pink, or orange, etc... and dont really corralate with harvest time.
Trichromes are the actual resin glands, and you need a magnifying glass to see them.
I personally harvest when I see amber glands just starting to develop as I like high thc and low cbd.
Dont get all freaked out, just feed them properly and let them grow. It looks like your got a good 3 weeks left from the way your nugs look in the picture.

what signs of over watering do you see..if anything, thought I wasnt watering enough (till the cloth pots leaked out the bottom, etc) so the other day I gave them a very good watering/somewhat a flush, I normally dont water until it floods out the bottom, but the advanced #4 was feeling a bit hard down towards the bottom of the 10 gal pots

yes, the trichs are the mushroom shaped glands on the buds and sugar leafs...I have a jewelers loupe and a 80x led magnifier, and they are cloudy and last week were all clear as can be

any idea why the sugar-fan leafs on the upper buds would ram horn, as I thought that was strictly from too much N, and they are on very low N now..

Thanks so much for all of the valuable info and help, you guys rock
(I'm a sister..lol)

and with my dehumidifier, its only keeping the RH around 50, does it have to be lower to make them look all sugar coated, or is it just they aren't THAT far in development yet??

I have given them unsulphured molasses 2x so far, does this really help fatten up the buds? Because it seems it attracted a lot of flies to the soil, and I didn't want anything bad happening, like maggots in my coir mix.
sucanat and bee pollen, what do they do, never heard of the 1st thing mentioned

going to go take some current bud pix to post so ya can see where I am at...