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You've got a calcium deficiency probably caused by a lockout ... and just giving them calmag, as you are doing, will not fix the problem - you have to fix the cause. When you have a lockout, the plant is unable to absorb any calcium no matter how much you give it.... There are two avenues of approach here - you could simply give the plant nothing but pH'd water for a week or so and then when you reintroduce the nutes cut back on the Micro (it has heavy nitrogen in it - in fact, the NPK of it is 4-0-0 so it's almost ALL nitrogen)... OR you can flush your plants with 3X the pot volume of pH'd water adding in 1/2 strength nutes to the final gallon but cutting the Micro out completely. I would choose the last option myself - it's a pain in the neck but you want to get rid of the excess nutes and any built up salts that have accumulated in the soil... AND you don't want to waste time because autoflowers have a very short life span... The culprit here is the Micro - you can choose to either reduce the amount by at LEAST half or get rid of it altogether... plants in flower need a little nitrogen but not a lot.. and Micro has a lot... Good luck!