Weird pattern on leafs

It’s hard to say with bot much information. However I did look at your diary. So if these plants are tied to it here’s what I think. They’re probably getting a bit hungry and you look like you’re having a little bit of a magnesium deficiency. You can rectify that with making an epsom salt foliar spray with a PPM of less than 200 and a PH of around 6.5 would be fine. Though don’t spray this while your lights are on. Do this just after lights out. It’s gonna give the plant some time to dry during the dark period and water drops on leaves act like a magnifying glass and you’ll end up with burn spots on your leaves. An other thing I noticed in your diary is that you show you are PH’ing your water at 6.5 this is fine for flowering. For veg you should try and bring it down closer to 5.8-6.1 PH. Coco is on the edge of being hydroponic and works better at lower PH ranges than your typical living soils. Hope that helps. 🤙