I'm new here and a noob grower. My set up is a 40"X40" grow tent with a MarsHydro TSW2000 led and a autopot watering system. The problem i have look like this:
The leaves get yellow spots and edges and they curl down.
It is the first week in bloom (12/12) and I grow in coco coir with 30% perlite. The nutrient i use is biobizz grow at the moment with 1/4 of recommended dosage. In veg I did not use any nutrient at all. Only PH regulated water. I always aim for PH 5,8.