I am a new grower and would appreciate any help you can provide with my concerns. Here are the details to hopefully help make it easier to diagnose what the issue is or deficiency may be.
I have an indoor PC case grow (micro grow) with with two 120m fan's for intake out exhaust, 4 cfl bulbs, 2-27 watt 5500k daytime lights and 2-42 watt 2700k. My temps range from 70-90 degrees Fahrenheit depending on the time of the day. I am using a soil-less organic medium by sunny girl gardens (ok but will not use this brand again), my PH is at a pretty constant 6.8, I have not used any nutes, using distilled water every 2-3 days depending on how dry the top 1-2" of the soil is, I am using 6" pots and am watering about a cup or two of water when needed. This is an auto-flowering Short Stuff blue Himalayan that is 29 days old, 2 weeks into flowering, and is 7" tall. I am not sure if what I am seeing on the leaves is normal, some type of deficiency, or something else. I think the leaves may be suffering from too much heat but not sure. Any ideas as to what may be wrong? If you need any more info just let me know.