based on your suggestions i have marked it up on an 8 week strain are the weeks i have placed next to the corresponding ec values the weeks when you think the ec should be...?? and if so why, do you know the exact feeding needs of say an 8 week strain
For example this run I've been as high as 1.8EC but that's not in my advice you quoted.
Like I mentioned I treat coco just like any other hydro medium by monitoring EC in vs EC out.
If I get a good drop in EC in the runoff then my next feed gets increased by 0.2EC.
Now its not the perfect way to run it as it doesn't give you an exact indication of the rootzone EC without taking coco samples and distilled water etc but its worked for me for almost 5 years all bar when I was full hydro.
Like any growing method it takes time to develop your "own" way.
I don't believe ANY feeding schedule can be used without hiccups, this is why I stated it should get him through.
And yeah your about right on the weeks. Again though I don't have a set week number for PK1314 usage.
Its governed by plants response and growth etc.
J