Anyone think this isn't nute burn?

so I'm four weeks into flower growing in soil under 600w hps

I've just noticed some problems with the tips of the leaves and some patchy brown spots over one or two of the whole leaves.

Any ideas guys?

COPY/PASTE: This “Support Ticket” into your forum post.



Answer these simple questions the best you can.



If you do not know, or do not use something; Just say so = NA



Name of strain:



Age from Sprout:



Soil in pots, Hydroponic, or Coco / Brand and type of Soil & Size of Pots:



How often do you water and how do you determine when to do so?



PH of water and runoff or solution in reservoir:



What is strength of nutrient mix? EC, or TDS:



Indoor or Outdoor:



Light system, size and height from plants:



Temps; Day, Night:



Humidity; Day, Night:



Ventilation system; Yes, No, Size:



AC, Humidifier, De-humidifier:



Co2; Yes, No:



Add anything else you feel would help us give you a most informed answer. Feel free to elaborate, but short, to the point questions and facts will help us help you