After researching, I couldn't find anything on this

What is your experience level? (novice, 2nd and soon 3rd grow)

Your Equipment:
.1) Type and wattage of lights. (400 HPS, 105w CFL)
.2) Distance from tops? CFL, 15 cm, HPS 40 or so
.3) Reflector type? (enclosed reflector for hps, bare bulb for cfl)
.4) Is there a consistent fresh air supply? yes, because my attic is airy
.5) Do you have an exhaust fan and a circulation fan? for the flowering room yes, for the little ones no, because they are out in the open in the attic
.6) What are the bulb wattages, kelvin ratings, and schedule? little ones: 20/5 Flowering: 12/12

Your medium:
.7) Specific brand and type of soil, (soil) and anything you've added to it. (potting soil, perlite, worm castings)
.8) Size of container. 10 liters
.9) Did you use peat pucks (or similar) to root clones or germinate seedlings? rockwool

Your nutrients and water:
10) Source of water? (tap, bottled or filtered) What's it's ph before adjusting? tap, 6.5
11) Method of checking water ph. (ph pen, test strips, aquarium test kit...) test strips
12) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...)
13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule.
14) How often are you watering between feedings, and how much per watering? 3 times a week (if need be)
15) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...)
16) Are your ph levels stable, or do they fluctuate? stable
17) What is your ingoing water's ph? ...your runoff ph? 6.5 and with a soil ph tester, I have it at 7.5
18) Do you foliar feed? If so, with what, how often, and at what time do you spray? nope

Your growroom:
19) Indoors or outdoors? indoors
20) What size of closet, room or hut? flowering: 1 square metre, growing: 5 square metres
21) What are the temps and humidity levels while lights are on? ...With lights off? on: 25°c off 17
22) Have you seen signs of insects in the growroom? little flies, but I've checked for larvae and there aren't any

Your strain:
23) What strain are you growing? (Indica dominate or Sativa dom?) both, LSD, AK47, critical +, diesel, bagseed and just germinated white widow, haze auto and fruit auto
24) From seeds or clones? seeds and clones
25) Is this an autoflower strain? nope

Apart from the heat stress (I've corrected that issue) I'm noticing a bit of black in the veins of the leaves. It could just be my imagination or the genetics of the LSD, but I am not sure. Any thoughts on that? Also, I've included pictures of the flowering lady that I have and hopefully one of you could help me to identify it. It was given to me as a gift and the person didn't know what genetics it is. It's been 2 months now since I've starting the 12/12 lightning. The one on the right is the AK47 and it has shown it's tits! hahahahahahahaha.

Thanks for all the help!

http://i302.photobucket.com/albums/n...o/IMG_0010.jpg

http://i302.photobucket.com/albums/n...o/IMG_0009.jpg

http://i302.photobucket.com/albums/n...o/IMG_0008.jpg

http://i302.photobucket.com/albums/n...o/IMG_0007.jpg

http://i302.photobucket.com/albums/n...o/IMG_0006.jpg

My flowering beauty:

http://i302.photobucket.com/albums/n...o/IMG_0025.jpg

http://i302.photobucket.com/albums/n...o/IMG_0024.jpg

http://i302.photobucket.com/albums/n...o/IMG_0023.jpg

http://i302.photobucket.com/albums/n...o/IMG_0022.jpg

http://i302.photobucket.com/albums/n...o/IMG_0021.jpg

http://i302.photobucket.com/albums/n...o/IMG_0018.jpg

http://i302.photobucket.com/albums/n...o/IMG_0017.jpg

http://i302.photobucket.com/albums/n...o/IMG_0013.jpg

Also, since I have fertile soil in my backyard, could I use that along with perlite as a growing medium?

I'm not sure what that is but I've similar black spotting on roses that were infected with a type of mold. I'd avoid using outdoor soil for an indoor grow as outdoors soil will bring small bugs. Potting soil is sterilized at the factory and if bugs get to it, it's usually after you buy it and they get into the grow room. You can use outdoor soil if you want but it's less predictable. It's possible that the black spotting is a result of a deficiency; either that or it is a disease, not sure which. Since I don't know what that is, it's hard to tell you how to solve it.