Dean10vipaspectra P2000

You really better off to feed using a reader so you can feed by ppm, ec. Autos start off in cocoa at 200 PM and you work your way up to the 600 to 650 mark with autos. Your ph is set for flowering right now. Needs to be kept as close as possible to 5.8 mark in veg and 6.2 mark in flower.

Have you considered neem oil?

Not sure on your pen but that reading may be equivalent to ec 1.145. So your running autos which I find top out at an Ec 1.2-1.4. Get your water and test that 1st. Write it down, eg mine is Ec 0.185. Then add 1 ml of each nute you use and see how much each one raises it by. From that you should be able to dial in how much of each product you want to use without exceeding the Ec. Good luck

I don't think it's a nutrient over feed at all. These plants look heavily underfed! Increase your feeds, double check your ph levels of your water and your medium, for coco they need to be between 5.5 and 6. This happens to my coco plants first time when I was accidentally trying to feed them with ph 7 water. It just doesn't work, they just don't like it

Keep in mind that your previous questions do not appear with this question. What problem are you having?

Is your diaries information correct? 2500-PPM and EC-5 is cray high. I'm am surprised they are alive if that is correct reading. You may need to calibrate your TDS pen and confirm the numbers are true. If they are real, you need to lower the feed immediately and flush it out. If the numbers are not correct you maybe underfeeding your plants. you can use 1/2 of the feeding schedule recommended by AN but keep calmg normal. Auto's are not as heavy feeders and like less. your lighting also says its 17/7, 18/6 or 24/0 is the ideal settings. I prefer 18/6 myself for autos. Best Of Luck and Happy Growing!