I have a ph pen and a tds pen... so nothings guess work and as far as light stress, that makes the more sense than nute burn because nute burn should be worse away from the light because theyre not absorbing as much as the plants directly below the light. i think a deficiency or lockout could be the problem since the plants directly below the light are the ones absorbing the most nutes and so maybe thats why its showing the worst there... i really wish i could get this dialed in but according to the three forums that ive asked for help on, i have heat stress/light stress, nute burn, lockout, phosphorus def, Mg def, so who knows...

for the sake of massive buds are there more than 2 expert growers out there that can agree on my problem/s?

Maybe this will help, I hope

How long has this problem been going on? ~10 days
What STRAIN are you growing? white widow/pure power plant/blue hash
What was the establishing technique? (seed or clone?) seed
What is the age of your plants? 85 days
How long have they been in the soil mixture they are in now? 65 days
How Tall are the plants? ~4 feet
What PHASE (seedling, vegetative or flower) are the plants in? flowering
What Technique are you using? (SOG, SCROG etc) SOG
What size pots are you using? (Include how many subjects to pot) 3 gallon pots, 1 plant per pot
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?) fox forest ocean farms 4 parts, to 1 part perlite
What Nutrient's are you using? advanced nutrients 3 part + their ferts
How much of each nutrient are you using with how much water? my input is less than 1000ppm *Knowing the brand is very helpful*
How often are you feeding? once every 7-10 days
If flowering, when did you switch over to using Bloom nutrients? 1st week of flowering
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect) i mix all my ferts and then add the grow micro bloom at 1-1-1 until ppm is ~1000
What is the TDS/EC/PPM of your nutrients used? ~1000
What is the pH of the "RUN-OFF"? 1100-1700 last watering
What method of pH test was administered? Using Strips? pH pen? ph pen
How often are you watering? 4-5 days
When was your last feeding and how often are you feeding? 3 days ago feeding every other watering
What size bulb are you using? 1000w hps
What is the distance to the canopy? 18-20 inches
What is your RH Factor? (Relative Humidity) 40-50%
What is the canopy temperature? 80
What is the Day/Night Temp? (Include fluctuation range) 80/70
What is the current Air Flow? (cfm etc.) closed environment but a large box fan is constantly blowing across the canopy
Tell us about your ventilation, intake exhaust and when its running and not running ? again closed env so its kept at temps by AC
Is the fan blowing directly at plants? oscillating under the canopy and box fan directly over the canopy sorta angled towards the light
Is the grow substrate constantly wet or moist? moist and i let the pot get light before next watering
Is your water HARD or SOFT? pretty soft ~60-70 ppm
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? tap bubbled for at least 24 hrs
Are you using water from a water softener? nope
Has plant been recently pruned, cloned or pinched? nope
Have any pest chemicals been used? If so what and when? nope
Are plant's infected with pest's? nope

that should do it, hopefully the above questions help out.