Pale leaves

I'm looking through your nutrients list, and if its correct, you are basically giving her 2 grow nutes, and 2 flower nutes.............this adds up to a lot of nutrients, I certainly wouldn't be using 2 full strength flower nutes at this stage of growth. I would stick with ONE type of nutrients, such as your canna coco, and follow the directions on the bottle. More nutrients does not equal more growth. Feed one type of nutrients at a normal or slighly reduced strength, and measure runoff ph to make sure your root zone is where it should be. Happy growing.

I would say its a toxicity, see how it recovers after your flush, and then keep watering with ph'ed water. The dark green leaves and curling of the edges makes me come to this conclusion. If possible, check the ph and PPM of your water runoff.