So the LED I bought is a HLG-300L RSPEC. Apparently it’s a good one. I’ve tried changing its height to no avail. I also have been using an organic calcium/magnesium additive. Again no change. I use an organic soil mix from a very well k own organic grower. The only thing I changed was the light. Seedlings will start to show problems after a few weeks and it continues through veg. Once they go into flower with a HPS everything gets better until harvest.