28 29 degrees in flower is this ok?

Hey just flipped over to flower and I can't seem to lower my temps without fully hanging intake outside,

I have 3 600w in a 1.2 x2.4 tent have the 6" extractor pulling negative pressure with 6"intake coming in I have added another 6" intake today so will see tomorrow if this has made any improvement.

My temps with lights on are averaging 28 the plants all look healthy and do not look heat stressed etc but can I be causing any issues I may not know about?

9 x stardawg 3 under each 600 light
Ambient temps around 22 degrees

Thanks.

Not optimal, but not terrible. You may get slightly slower growth and slightly less dense buds. I wouldn't sweat it, just get as much air exchange as you can manage.

keep those fans blowing on the buds they will grow just fine but they will be more loose and the quality will be down . yes it will grow monster yields but in cooler temps you will see the difference .

Thanks, today they are sitting comfortably25.7 and have not gone over 26.6, I'm not sure if this is down to the extra intake which I'm sure will be helping or the wind direction outside, if the can stay even at the high end of 26 I will be happy with that all day.