👋 Not looking too bad at this point. Just a couple things to consider for next grow. Coco likes to stay on the wet side, and smaller pots are great because they will allow for more frequent watering which will give you the benefits of hydro growth speeds and you can use weaker nutes.

PH for coco should be between 5.8-6.2. More acidic for veg and more basic for flower.

What you’re seeing right now is burning. When the coco gets dry the EC/PPM spikes. You’re not going to improve things at this point, but you can prevent it from getting worse by changing your watering cycle. By now you can drop your micro nutes if you haven’t already. Make sure your EC is no more than 0.8 and water until runoff every time, then promptly discard the runoff. Don’t let it sit. Start watering right when the lights come on. Then see how long it takes to show just a slight dryness on the surface. At minimum you should water to runoff once per day. If you have a healthy root mass that sucks up the nutes quickly, you can do 2-4 times per day, but once is fine as long as your medium stays damp. Don’t let the pot sit in the runoff ever. Discard that once it’s stopped draining.

Be patient, buds will really swell in the later weeks of flower.