Heat stress, time for 12/12?

Hi!.
it's seems that i can't do anything about the heat stress. I have right now 20/4 lights on, what do you people think about to start a 12/12 cycling instead to decrease the heat and start the bloom?.

I have a auto in week 6.3 and the pistols are showing.
(don't need to change the lights because of a auto but still, hard times whit the stress).

12/12 is one way to reduce your heat and will do nothing except reduce yeild by a negligible amount assuming other parameters are in check. IMO...Heat is the single biggest threat to a fruitful harvest.....I've run autos on 12/12 for over 15 yrs just for reduced costs and adjust schedules according to expected ambient temps....

Oldreefer said:

12/12 is one way to reduce your heat and will do nothing except reduce yeild by a negligible amount assuming other parameters are in check. IMO...Heat is the single biggest threat to a fruitful harvest.....I've run autos on 12/12 for over 15 yrs just for reduced costs and adjust schedules according to expected ambient temps....

Click to expand...

Thank you so much man! I really appreciate it.
I've tried everything and I don't get it way I still have the heat stress problem?
Heat in my grow space is about 21-25C (52cm away) and humid is 55%.

Everything els is OK in the grow room, have not intended to grow that big size of weed hahaha because I have just a 60cm x60cm x160cm tent but yeah