Not always sometimes the thc mushrooms can cloud up for other reasons than the plant is ready stress lack of nutes too many nutes i could go on for hours why they sometimes cloud early.The best way that i have found is when the leaves start to yellow up,looks like it could do with a few more weeks to me though, but cant realy see that much.let all your plant run a min of 9/10 week of flowering you will find the last few weeks from 7 onwards are the weeks when the plant will throw the last bit of bud and the colas will compact up.I always did my plants 8 week but since i have been doing then the extra 3 week i pull 10 13 every grow now,flowerat about 2 ft tall max of two plants per 600.I combine the two best nutes about and since doing this the bud i get is alays nice and big amounts.Canna coco a/b,this is great stuff because it is used all the way through the grow no need to swop over to a flowering nute,but i add advanced big bud at week two.I used to use bud blood at week one of flowering but ont like useing it in coco,i have done test to see if this gives me a bigger yeild when useing it and my results are it dont.At about week 7 i use advanced overdrive for two week then down they come at the end of week 9.I use two 600's coco auto pot system