You and I are in the same boat with not having a ppm meter. The correct answer would be for us both. "We need to get one and while were at it a digital pH meter too!"
Unless you are absolutely sure you know exactly which one of your additives/nutrients did the damage back off of them all. Start with the basics : Just use your baseline nutrient = ff bloom. <--Is there any nitrogen in it? If not.. you still need to add some (not much). The plants in the pics seem to be around 4 weeks into flower + or - 4.20 days.
I use a couple additives too but work them in within the final 4 week period. I have not used any Advanced Nutrient products before.
1) Eliminate any possibility of this being a pH issue. (Test your nutient solution prior to irrigation, and also pH the run off if applicable) When you test your run off its also good to take a sample as water first starts pouring out, and again as it stops pouring out. (This will show you the BEFORE AND AFTER pH)
2) Since you are using combinations of nutrients from different vendors, I would not follow their charts. Start with the baseline nutrient again, 1/2 the concentration of whatever your bloom fertilizer suggests. Make sure you are adding a little Nitrogen too. You can up the baseline nutrient to what the evil box tells ya after one week. You didnt forget the Nitrogen did ya? Keep this going til 2-3 weeks out from harvest.
3) Start adding the big bud at 3 weeks from harvest.
4) Start adding the bud candy at 1.5 weeks from harvest. Reduce base line nutrient back down to 1/2 concentration. Stop any Nitrogen additive at this point too,(If ff bloom has it, thats fine)
5) Take detailed notes of what you do. After the grow/harvest make sense of it all. Generate your own feeding chart. (Don't forget about the Scientific Method) Believe it or not, you are a scientist now !
* This is what I would do if I had these supplements/nutrients.