Gca yellowing tips

To me it looks like nutrient burn from too much nitrogen or just general excess of feeding. Give a couple of irrigations with plain water, nothing else, before resuming feeding, but maybe go to three quarters the strength of what you are giving now. Without any information regarding what you are feeding them, or how often, it is hard to say exactly what to do. I would also urge you strongly to go to 18/6, nothing on planet earth can function properly without sleep, cannabis included. Your plants NEED a dark period to convert starches and sugars into forms they can use, and without a night time, this will not occur, meaning that while your plants are ok, they are not functioning normally. Giving them a night time will not harm them, in fact everything will be better, bigger and healthier than they are now. Your plant can not function properly without a night cycle. This includes making trichomes. Besides, cannabis can only grow so much during any 24 hour period and this growth tops out at around 18 hours, meaning running your lights any longer than 18 hours is basically a waste of electricity. Give your plants a normal awake/sleep/awake/sleep cycle ASAP, they must be completely exhausted by now, and a completely exhausted plant can in no way be healthy or function properly. Could you imagine not sleeping for weeks/months on end? Again, your plants NEED a dark period every 24 hours to function correctly. 18/6 is optimum for autos for their entire cycle, and photoperiod plants in vegetative growth. Any more is totally unnatural and completely unhealthy. You will not lose yield by going to 18/6, most probably you will get more once your plants are getting a proper awake/sleep cycle and are functioning normally. Hope this helps,...... Organoman.