Im in the final flush but plants still green mmmm ?

[Puredank]

Hi y'all growing this mephisto sour stomper and she has been growing in coco with canna coco a+b base nutrients and all their additives, I did a big flush using bio diesel crystal clear for the final flush over 2 days got my PPM to 0 and have been watering just plain ph balanced water since the actual flush started and after getting PPM to 0 and my plant hasn't started to fade or anything as yet ? Is this normal ? the thrichomes tell me she is ready I'm just waiting for some color change or fade to happen harvest day is set to be the 10th February I started the flush on the 1st Feb 2022 total 10 days total flush time then I will be chopping her down. can anyone tell me why the plant is not autuming off as yet or throwing colors any advice would be great thanks

 

[ComfortablyNumb]

Temps during lights on and off?
Canna-coco holds nitrogen and releases it slowly along with a couple of other nutes.

 

[Puredank]

Temps during lights on and off?
Canna-coco holds nitrogen and releases it slowly along with a couple of other nutes.

I am running my temps 20.3degrees celcius and 50% humidity that is during lights off time. Growing under 600watt HPS!

 

[ComfortablyNumb]

Get it down to 16 at lights off and you will start getting fall colors.
The rest, you just have to wait till the canna-coco runs out.