Not nute burn. Almost over!

OK team.

My plants are deep into flower (approx 4-6 weeks). A week ago I noticed one of my plants had small amounts of burn on the tip of the top single finger leaves. Just two or three leaves on one plant.

Tonight I was noticed the same thing on another plant. Just single finger leaves on the main cola. Can someone elucidate the issue? Surely pics would help but I'm not able to snap one tonight, tomorrow I can.

I don't believe it is nute burn. I'm using Fox Farms Ocean Forest soil. Once leaves started showing yellowing (signaling me that the soil was tapped) I started using General Hydroponics Flora series Micro, Gro, and Bloom. I've been told FFOF is weak on Magnesium so yesterday I watered with some CaliMag.

I can't "see" shit!

As promised here are the pictures.

It seems to be spreading to other leaves.

Thank you for the input!

How long ago was this "I started using General Hydroponics Flora series Micro, Gro, and Bloom"

you have a PH meter? I think your ph is too low. for soil you should aim for 6.5 When i mix my GH it usually starts at about 5.0 and i need to add 5-7ml/gallon of PH up cystals

Look pretty good for that age, I don't see a problem.

Are the plants that have the symptoms the same strain ?

Something has obviously caused it but I get all sorts of discolorations toward the end and don't ever worry as long as there is plenty of green overall. Look at it from 10' away not 10".

Worst thing you could do is take a stab in the dark at a problem (I don't think you have) and do something to actually cause a problem.

@texasjack First feeding was October 18 and has been maintained without any real issues.

@Growdict My pH has been maintained rather consistently between 6.5-6.7. This is with every watering and feeding. Using a calibrated digital pH meter.

@AimAim Thank you! I have two strains and both exhibit the same symptoms. I'm not sure how close they are to the end but I'm hoping to finish strong.

Well then. I agree with aim. Ride it out. You are close and should finish well enough