Started checking on the trichomes this week, but didn't pay attention to my upper buds distance to the LED panel, realized by the end of the week that there are too many pistils and they might be foxtailing a little. Increased distance by about 10cm.
Was lazy and didn't check pH, it dropped to below 5 at the end of the week. Added Plagron pH+ and swapped solution two days later. Everything is fine.