Flowers are not growing as expected... lets see if we need more than other 2 weeks... at day 74 I began to reduce nutrient in the solution cause it seems the plants are not absorbing much nutrient more. Just before emptying the tank the EC value had grown up to 2.7...
Normal...not quite but definitely not a problem my friend. It's just a pigment mutation.
If you look at my lilac diesel diary you'll see she has quite the case of it as well.
Some plants grow out of it. Some don't. It's definitely not your light.
Hope this helps.