250w hps, distance 35 cm but i set to 45 this morning, temp 24°C. Water ph at 6,0 weekly. I already looked op growweedeasy, it looked alot like light or heat burn but than with brown spots witch is why im asking it here to
Id get more pictures of those dark splotches, both on the leaf you showed and on other areas you see it. I think the people citing nutrient deficiency might be right.