Hi guys so I’m in the 6th week of flowering using rdwc strain is seedsman WW feminised photo. I have 2 growing in a 1mx1mx2m tent, RH is usually 50% I cannot get it lower than this but the airflow is good. Ppm is 1200 it has gotten higher than that and I saw some nutrient burn so keep diluting it. The pH always between 5.8 and 6.0 I’m using AN pH perfect nutes. Current light is a 600W hps. The roots look white and healthy water temp is pretty much constant 18°c. So the problem some strange happenings on some of the large leaves and the small leaves around the buds are starting to claw upwards at the base. Here are some pictures
So there is brown spots on the big leaves.