@CAMOGROWN, could be a ph issue but not likely, probably has more to do with the lack of nutrients I fed them prior to the flowering cycle. That being said promix is notorious for nutrient lockout later in some grows. As the peat breaks down the ph level of soil will drop. Breeder suggests this strain takes 60-65 days, so not really a big deal that they are fading a little early as long as buds continue to swell..