Nutrient burn or light stess? Last days of harvest

So comkng down to last days of before harvest. I noticed what looks like some sort of tip burn kr light burn on a couple branches. Can anyone point me to what thisbis so i dont repeat. I run a fce 6500 mars hydro (old style not smart) with 5g pots of cultivation nation 70/30 coco my nutrients are cultivstion nation 3 part with fox farm additives. I was using half strength nutrtients with an occasional stronger dose. Water with nutrients every day. Doesnt seem to be effect the whole plant. But was just curious of everknes thoughts. I run the light 75% cus it gets to hot in tent at 100% but indid vut it up to 100 once or twice for a day or two . Didnt notice the spots right away so im not sure if it was from that or not. Light aits aboht 18-20" above canopy. Temp and humidity are 75-78f 45-55%rh

Need a whole plant pic..

HydoDan said:

Need a whole plant pic..

Click to expand...

Ok Its not on the whole plant but ill post a whole plant pic later if that will help.

what is the size of your tent?

if your tent is anything under a 5x5 and your cranking that 730w light to 100% for multiple hours, then yes its probably light burn.

now if that is happening below the canopy and the top leaves look fine.. then probably nutrient burn,

Yeah man try dropping your light down to 50-75% and watch the leaves