Pistils turning brown too early?

Hey guys, new grower here!
This is my 4th grow in my very small LED growtent. I'm currently growing 4 different strains and I'm loving all of them so far. There's only one problem:
About a day ago, I noticed a lot of the pistols were turning brown. That confused me, because from experiences with the exact same strains, I know it should take them about 2-3 more weeks until they are ready to harvest. I'm using clones from motherplants so they should have the exact same flower times as before, right?
Recent changes worth noting are:
I added another 170W LED to the tent and I wasn't home for 3 days. When I got home, the RH was at 36% which is a lot lower than usual and the plants showed slight signs of underwatering. I watered them and fixed the RH and here we are, 3 days later, a lot of their pistols turned brown / orange.
I also checked the trichomes and everything looks normal: about 60-80% transparent, rest of them is milky. None or very few are amber.
Here's some pics of the plants. The first 2 show all of the plants in the box, the rest are closeups of buds.
What I'd like to know is: Should I change anything? Like move the lights further away? Or do you think it's happened because of the stress that the low humidity + underwatering caused? I think I'll just give them as much time as normal and keep it going Thanks for reading and enjoy the pics of the buds!

Sideview



Wedding Cake



Blue Cheese



Top View



Serious Kush



White Satin

Fourth picture, upper right and in other pictures it looks like you might have thrips. Check closely for those and while you're looking take a look for any herms, just in case.

As for 36% humidity and a little low water stress I wouldn't worry about that, they look fine. I rarely make it past 20% during flower. So they'll be fine.

PS it's pistils and clones (not seedlings) and yes the clones should be close to the same as the mother plant.

curious2garden said:

Fourth picture, upper right and in other pictures it looks like you might have thrips. Check closely for those and while you're looking take a look for any herms, just in case.

As for 36% humidity and a little low water stress I wouldn't worry about that, they look fine. I rarely make it past 20% during flower. So they'll be fine.

PS it's pistils and clones (not seedlings) and yes the clones should be close to the same as the mother plant.

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Yep, i noticed the thrips.. its only very few and it just started after they started flowering... so i was hesitant to use any pesticides/neem oil.. dont wanna ruin the buds. No herms and im not really concerned about the thrips either since i introduced some predator mites or whatever they're called. No spider mites, dont worry xD
Also thanks for setting me right on the pistils thing, i thought its pistols for years

Undercover Spooch said:

Yep, i noticed the thrips.. its only very few and it just started after they started flowering... so i was hesitant to use any pesticides/neem oil.. dont wanna ruin the buds. No herms and im not really concerned about the thrips either since i introduced some predator mites or whatever they're called. No spider mites, dont worry xD
Also thanks for setting me right on the pistils thing, i thought its pistols for years

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You can use citric acid to kill thrips. You don't need chemical pesticides or neem oil. You should be concerned about the thrips. It's doubtful the predator mites you introduced are going to do much to stop the thrips which will continue to multiply.

Undercover Spooch said:

Yep, i noticed the thrips.. its only very few and it just started after they started flowering... so i was hesitant to use any pesticides/neem oil.. dont wanna ruin the buds. No herms and im not really concerned about the thrips either since i introduced some predator mites or whatever they're called. No spider mites, dont worry xD
Also thanks for setting me right on the pistils thing, i thought its pistols for years

Click to expand...

I would not want to smoke mites, predator or not. Thrips are easy to kill, listen to @xtsho if you see them there are tons more, good luck.