Anyone Know why these brown spots are here

@HighRoller909 Firstly, not all of the questions are about nutrient imbalance. It's often method, lighting, watering, strain-related. Other than the prevailing "harvest time" questions.

You can't diagnose a problem with such general thing like nutrient imbalance.its like telling "you are growing a seasonal plant,itll die anyways". All of the questions people ask here is about nutrient imbalance,this won't help grower.They'll get the same problem again if they don't know about the cause.What i see from your diary and this photo,you clearly have nitrogen overload,look at the leaves of your plant,especially the one in the left,leaf tips are pointing down and have very dark green color,typical signs of N overload.looking at your feeding regime, 4ml for Cocos A is too much Nitrogen for this late in flowering.Why am i saying Nitrogen overload instead of simply saying it is calcium deficiency? Because they are related in some way.Too much nitrogen will block calcium from being absorbed,creating a lockout.Nitrogen does the same against K (potassium). Too much N blocks Ca and K,this simple.When i get this problem,my first action is always to cut off N,completely.and give a litle bit more Calcium to my plants.Usually solves the problem but signs are obvious,your plant is suffering from high Nitrogen.Also,as you are coming closer to finish,you can flush to get rid off N excess in the coco and let the plant pull from its leaves,guaranteed solution.Add cal/mag supplement to flushing water.No more cocos a for your plants,they are fully flowering.bottle says 4ml/lt,i used canna before but should never follow that direction.canna,plagron they are all super strong nutes

Yeah that's likely nutrient burn/imbalance. As Dankophrenic suggests, lower your nutes, and potentially add some of buffering agents (for simplicity I'd recommend like calcium and citric acid/lemon/citrus juice). But of course, that is speculative. Certainly though, lower your nutes, at least to 50%.

Looks like burns from water droplets that got on the leaves while the lights were on

I wouldn't worry about it, maybe start dialling your nutes down to 1/4 strength.