Northern Lights Organic

Having quite a bit of trouble with fading leaves, burning and just can't figure out what is going on. I've top dressed on Saturday to try give her a boost, it looks like potassium deficiency but it also looks a touch like toxicity too... very confusing.... so what I'm going to do is just give water until the end now. 4 weeks ish should be ok and I reckon I can limp her home if shit hits the fan. Hoping its just deficiency and the top dress will fix it. I've not overfed with amendments so I don't understand it really. The buds are still growing no problem and calyx are starting to swell in places... all a bit weird.