Thanks for all the help DH!

I am going to go down to half strength nutes and alternate with plain water for a bit and see how they react.

I will also try feeding the 2 sativa dominates less as well

Here is a pic from today, they do look a little better and the runoff today was 5.5 after a light feeding.
Soundvibes Reviewed by Soundvibes on . 1st Grow: Please Help with Canna Coco + Plants turning Yellow Hello All, First off, thanks to all the people that actively post! It is because of their knowledge, I have been able to make it this far :) Now on to business... It has been about 3 weeks old since the seeds popped through the Coco. I have noticed over the past week or so that the leaves are starting to turn yellow. They are still growing but I can tell something is wrong. I am guessing it is a Nitrogen deficiency, but I am so new at this, I wanted to ask the pros! Rating: 5