Hey!
You a lot of white pistils still and for It being an auto in week 13 that's rare..
What light schedule are you using? 12/12 or 18/6?
On you weekly data it stats 18/6 that's why I ask.
If it's on 18/6 she could have all those new white pistils because she's revegging and starts to foxtail..
if that's the case take it down to 12/12..
If it's on 12/12 already and the data was simply not updated then don't mind that.
As for when to start using Kleen and how long till harvest.
Harvest window opens when you start getting amber pistils.
Normally when there's 70% amber and 30% white pistils they're ready to flush.
The best way to check is looking at the trichomes. With a 60x magnifying loupe.
Clear trichomes haven't reached their full potencial yet, cloudy ones are full of THC and amber are losing THC while gaining CBN.
So depending on your preference whether you want more of a head high or body high.
I harvest when after examining and finding 70% cloudy trichomes and 30% amber trichomes.
For me that's a prefect combination, depending on the strain as well.
I start flushing when I find the a 70% cloudy trichomes.. Thats normally two weeks until you get those 30% of amber trichomes.
As for the difference between CLOUDY or CLEAR.. Clear trichomes look like shiny glass while cloudy ones look like more like plastic.
Good luck and Happy Growing!😃🌱🌿🌲