Week 9 Flower - All leaves yellow but no amber trich's

Hey guys, I have 3 plants that are in week 9 of flowering and all of the leaves have turned yellow and/or fallen off. Even the leaves towards the top of the main stem. The trich's are mostly cloudy but still a lot of clear ones. I havent been able to find a single amber trich. Strain is Kalishnikova from Greenhouse Seeds. The strain is a cross between ak47 and white widow. I've done nothing but pure water for the past week and half. I know that plants start to yellow late in flowering, but wasnt sure if they all yellow. I used Canna nutrients as directed by the Canna company. Buds are huge and heavy but I want to make sure to harvest at the right time. Any comments would be greatly appreciated!

my ww's usually take 11-13 weeks to turn even 5% amber.... it is frustrating ..

try using a nitrogen supplement when you notice your leaves begining to get yellow. a little bit at a time. too much N will hinder bud growth, just use enough to keep your leaves green.
If you nootice them getting dark green its too much. you will have to dial it in. but that is your best solution.

hope this helps...

just wondering why you are growing sat Dom plants and looking for a couch lock buzz (indica buzz) when sat's are a head rush..50% milky is right for a sativa rush they continue to mature while hanging up as well IMO.. just a thought.. any way enjoy the fruits of ya labor..good work man.

try pulling at different times to see what you like best and grow from there. some sativas tend not to finish completely so pick your time. indicas tend to finish faster. usually big leaves will deplete N first.

I've read that in a few places. So its actually ok to harvest while there are still clear trichs on the plant? Will that encourage the effects of the Sativa? I checked again today and leaves are yellow up to the tips of the main stems. I mean so yellow they are boarder line falling off. Will be nice since I wont have to trim those while manicuring, but its worrying me a bit. Trichs still mostly clear and almost looks like the plant is still developing glands on the smaller leaf tips.