Burmeseanswered grow question 4 years ago Hi there, Over feeding or nutrient burn starts with a slight tips burn at the top leaves.I assume that I can see some tips burn in your photo.And your leaves look alittle bit dark green in colour.It could be genetic and also it could be too much Nitogen.Check for follow up by 90degree clawing leaves.If no clawing leaves, don’t need to worry.Another thing is you are using CFL and CFL emits light to side.It will be better if you put your light in horizontal and cover the top with a reflector.In that way, your plant can get more light.Happy growing... ✌️