Nute burn or nute deficient??? (PICS)

I am using fox farm ocean forest soil and whenever I start flowering the leaves will start looking like this WITHOUT adding any nutes. I'm thinking either the soil is too high in potassium or it's not getting enough. I can't tell if its deficient or burnt.... I really don't think its mites or pH, or temperature so i figure it must be a nutrient problem. I am 2 weeks away from harvest so I don't plan on fixing the problem now...but I was just thinking ahead for the next grow. Other things I was considering were possibly phosphorous or magnesium deficiency. Thanks for the help!

I think you should have fed it but I'm not sure if I would start if you're only a couple weeks away from chopping it...I love that ff soil though I use cal-mag and a bud booter other than that big bloom...also books a million is a great place to get books for a reference..

I can see Phosphorus Deficiency, Magnesium deficiency, and Calcium deficiency.

Calcium and phosphorus def. ! Critical level ! Good Luck !
If the pH of your root zone is off, then your cannabis cannot properly absorb calcium through its roots so the first step is to ensure that you have the correct pH for your growth medium.
Potassium isn't absorbed properly when there is too much calcium or nitrogen in the system. Check the pH of your water, and flush your whole system with water that contains half the normal amount of nutrients and see if your plant starts showing signs of improvement.

the pH of the soil is 6.3-6.5. So I don't think that's the problem.... I was trying to go organic without adding nutes to the water, so I was using ONLY tap water for a long time with a ph of around 8 (and I live in San Diego where the water is extremely hard) so excess calcium is definitely a possibility... Everything usually goes great until I switch to flower... From now on i'm only using R/O with cal/mag. Only a few leaves on the entire plant look like this so i'm not too worried and i'm only a few weeks from harvest so I was just posting this for future grows. Thanks for the help.

Cool, thanks man.

Thanks bruddah!

Are you 100% sure tho that this wasn't caused by the soil being too rich? It truly looks to me like those leaves are burnt. Or maybe I just can't tell the difference....