Something goes wrong

Need help yellov folling leavs. 2flowering week. Using everything from Canna . Ph 6.0

If you went right from the vegetative nutes and immediately rolled over to flower it's probably from that. I'm a beginner but that looks like a good old fashioned nitrogen deficiency. I personally use a high nitrogen formula all the way through flower. I would suggested feeding a 50/50 formula for a couple weeks and see if they don't darken up.

Yup it looks like you switched to bloom nutes too soon. What grow medium are you in? If soil ph is low.

Canna coco nutes? How strong are you mixing them?

Feeding daily?

Watering to 10% runoff or more?