Bud tips turning brown 20 days intoflowering (with pics) ... ?_?

Hello lads ,

this is my 1st grow ,they re 20 days intoflowering and some of their buds are turning brown ,
here some pics .





can high temp be the cause ? the last 10 days is been around 89 , still if i put my hand under the light it feels comfortable. Plus the oscillating and extractor fans are always on during the light cycle and 15 mins every hour during the dark period.

ph 3 days ago was 6.5
250 watt hps light
Humidity below 40%

can it be overnutes?
I read also that might be a sign of pollination but i checked and they arent hermies at all . I havent seen a stamen so far.

hope you can shed light on this

To be honest its hard to tell from the pics it really does not look that bad I agree the temps are high, I would keep doing what you have been but focus on getting the temps down and go from there. Looks like the heat is just starting to damage the buds but plenty of time to recover I believe

Nothing to worry about there, they tend to do that.

I would try to get those temps down though... do what you can to get additional air circulation.

Besides the temps Id say dont change a thing, she looks good.

yeah with 89 you can lose potency. some studies have shown that highest potency is at 70-80. at 90 degrees some strains lost even half of it.
leaves do not show heat stress nor overfert which would be indicated by burned tips or cupped leaves, only stigmas turning brownish. leaves are beautifuly green. try to drop temp to 80. good job man

ok i ll cut the hole bigger then .

just wondering , would adding co2 make it any difference??

if your in a dwc bucket there co2 will fuck your ph!

ok jus looked and your not....so.......