I use canna A/B Coco ,all way through my grows untill the flush,But do use Big bud,from Advanced, with it at week 2/4 and pk 13/14 week 5 for one week.
The Max EC i let them get to is 1.5 ec that is around week 5 till 7,the water for a week, at week 8.
I have friends that use there full line all way through ,With no higher weight then i get from using the least nutrients i can get away with .
I not a big believer that Flushing gets rid of all the nutes in the plant,But i do flush,Because i pretty sure that it helps with the plant finishing off,You can see the difference once water is added the plant seems to know its life is coming to a end,And thc production goes into overdrive.I have used overdrive instead ,of PK 13/14.With some great Results,I will be trying that out with this new set of seeds instead of the pk 13/14.
I did a Thread other day called, Going to try Something New.in this section ,that tells you what i use, at what point in the grow.
Hope this Helps,Do not be put of using this line ,because you wont regret using them, if you use them right ,the results are great,I have used them against Advanced and canna beat it ,that is not to see Advanced nutes aint no good because i have had some brilliant results with that line too ,
Tyke