Help Diagnose Spots Please

[munkside]

I got these from a friend recently, and noticed 2 questionable leaves. They are separate plants, and only one leaf on each plant has the spots. Your thoughts and would help a lot. Thanks.

[munkside]

What is your experience level? novice

Your Equipment:
.1) Type and wattage of lights. Two 600w MH (conversion)
.2) Distance from tops? 18-24 inches
.3) Reflector type? air cooled enclosed reflector
.4) Is there a consistent fresh air supply? Yes
.5) Do you have an exhaust fan and a circulation fan? Yes, and Yes
.6) What are the bulb wattages, kelvin ratings, and schedule? 18:6 Veg Cycle

Your medium:
.7) Specific brand and type of soil: HP Pro Mix
.8) Size of container. 2 Gal
.9) Did you use peat pucks (or similar) to root clones or germinate seedlings? n/a

Your nutrients and water:
10) Source of water? (tap, bottled or filtered) What's it's ph before adjusting? Filtered: my PH was close to 7... Which is an issue and will be corrected
11) Method of checking water ph. - PH Phen
12) Method of adjusting water ph. Ph UP
13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. Ive only watered once, with no nutes
14) How often are you watering between feedings, and how much per watering? n/a
15) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...) none
16) Are your ph levels stable, or do they fluctuate? n/a
17) What is your ingoing water's ph? ...your runoff ph? n/a
18) Do you foliar feed? If so, with what, how often, and at what time do you spray? n/a

Your growroom:
19) Indoors or outdoors? indoor
20) What size of closet, room or hut? room: 10x11 ft
21) What are the temps and humidity levels while lights are on? ...With lights off? ON: 75-78F OFF: 70-72F
22) Have you seen signs of insects in the growroom? Few plants showed small white spots (mites) have sprayed 3 times with AzaMax (while lights off)

Your strain:
23) What strain are you growing? (Indica dominate or Sativa dom?) Hash Plant & Silver Surfer
24) From seeds or clones? clone
25) Is this an autoflower strain? No