Eminent attack. Need help.

showing the entire plant is advised because it will help paint a better picture of whats happening. If you suspect you have bugs then inspect your plant thoroughly. Pay particular attention to the underside of leaves. Look for eggs or black, red or brown speck's. Doesn't look like bug damage to me, but without more pix with the entire plant, as well as VPD numbers and nutrient regiment and pH values.....a shot in the dark guess is all anyone can really give you. Some of the pix show unusually dark green foliage, which can suggest over feeding of nitrogen, but cameras sometimes decieve you with how they capture colours based on the available light and if there's a flash. The last picture i thought Deficiency of Calcium might be the cause of the blotchy necrosis spot. But without nutrition info, it's hard to say. The pix that display a rust coloured necrosis on the leaf margins, as well as the tips of the leaves could be the beginning signs of a Potassium issue. But what the cause of that is, without seeing your nutrients, and feed regiment, who knows for sure? Potassium can get locked out if there is an over abundance of Calcium in the soil, and vice versa. Calcium can get locked out by an over abundance of Potassium, but you need quite a bit of Potassium overload to cause that, and it's not typically common unless you are using a huge number pk boosing additive. Whenever you find an issue that appears to be a deficiency or toxicity of a element, but you can't pin point it, or if your plant displays numerous deficiencies at the same time, you can bet your last dollar (if you've been following a feed chart) that your pH in your medium is fucked up, or your soil has too much salts built up around the roots. In either case, flushing your soil with properly pH water so there is at least a gallon of run off out the bottom of the pots, will wash away a lot of toxic nutrient salts and also reset the pH of your medium. If you flush use room temperature water, not ice cold water because some salts won't become soluble in cold water so if it's room temperature you won't shock your root zone and will wash away more of what you want to get rid of. Periodic flushing, (i recommend between week 2 and 3 of flower) is good to do because salts WILL accumulate around the roots if you are feeding heavy and it will create problems. You can usually do well through veg and into the first couple weeks of bloom and then you will likely begin to see issues arise, and it's usually due to nutrient salt toxicity in the soil. So a flush between weeks 2 and 3 i always recommend to give you the best chance to complete a grow with minimal snags. Burning your plants in the flower cycle WILL hurt your yield and overall quality, but mainly it will impact yield. Anyway, i've yapped enough. In the future, post a more complete question and perhaps start a diary so we can visit it and use it as a supporting reference to your question.