What type of deficiency is this???

Thanks guys. I got some cal/mag supplement and am going to half strength nutrients to finish out the grow

I would say a combination of burning from too much nitrogen and a slight cal/mag deficiency developing. A dose or three with a mild calcium/magnesium supplement should solve that problem. but for the nitrogen burning, either feed less frequently, or my preferred option, feed as usual, but at only half strength. At this stage, half strength will not reduce yields or potency, only reducing the nutrient salt levels in the substrate, which is what causes the burning. The damaged leaves will stay damaged and will not repair themselves, but all new growth should be fine. Remember too, only water once the top inch or two have dried out from the previous watering and make sure to water until the water comes out of the bottom of the pot (to run off), as this will help prevent further nutrient salt build up. Hope this helps, Organoman.

Rust spots is Calcium deficiency!! Add CalMag to correct it.

Looks like it could be a manganese deficiency if it’s coming from new growth