Sorry for the second post, posted once the other day and now double checking because I found this leaf with more spots on it. Plants had been close to light 
, assumed this was light burn, yet just really wanted multiple opinions on it. Thanks!
First check is PH. Where is it at going in? What nutes? Could be calcium or mag. could be ph. We wont have a starting point till PH numbers. Medium can be loaded properly and uptake locked bad ph. If ph is good then we look at a deficiency. Nute line can be the culprit. Some require a flush periodically and at flip to remove salt buildup. Get us those numbers and names and we can assist much better please. What grow medium. Coco/hydro/soil. That also makes a huge difference in PH level requirements.
Going in it’s 6.29-6.4 soil is Ocean Forest and just last water 1 day ago I supplemented with some general hydroponics bloom.