temps should be 70-80deg.
humidity should be <50%
need good airflow.
florescent lights should be only 2" from top of plants
you should water less often and water thoroughly
your soil seems problematic, maybe change for next transplant? I recommend Promix for example
you need to be careful with nutes, depending on the soil makeup
I recommend you buy calmag, and humic/fulvic acid to add to your waterings, as well as clearex or dripclean to remove the salts.
Be sure to transplant BEFORE plants get rootbound, or you'll see nutrition issues.
Your plants need help, i would flush thoroughly with clearex'd water(issues seem to be related to salt buildup to me), then use a very light nute solution buffered with the calmag and humic acid.