FORM FILLED OUT, PLEASE HELP, HEAT STRESS??

Your Equipment: HYDRO, IKON 18 TABLE
.1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's) 600w hps x2
.2) Distance from tops? 3-4 foot
.3) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...) standard shade
.4) Is there a consistent fresh air supply? yes
.5) Do you have an exhaust fan and a circulation fan? yes
.6) What are the bulb wattages, kelvin ratings, and schedule? 18 hour

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

Your nutrients and water:
10) Source of water? (tap, bottled or filtered) What's it's ph before adjusting?tap 7.4
11) Method of checking water ph. (ph pen, test strips, aquarium test kit...) ph pen
12) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...) ph up
13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. canna aqua vega, 20 mil per 10 litre, a &b liquid oxygen 5mil per 10 litres
14) How often are you watering between feedings, and how much per watering? pumps on for 10 min every hour
15) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...)
16) Are your ph levels stable, or do they fluctuate? keep them 5.4-6.2
17) What is your ingoing water's ph? ...your runoff ph?
18) Do you foliar feed? If so, with what, how often, and at what time do you spray?

Your growroom:
19) Indoors or outdoors? indoor
20) What size of closet, room or hut? 8 foot by 6 foot
21) What are the temps and humidity levels while lights are on? ...With lights off? less than 30 humid, 28 -31 max
22) Have you seen signs of insects in the growroom? no

Your strain:
23) What strain are you growing? (Indica dominate or Sativa dom?) blues
24) From seeds or clones? clones
25) Is this an autoflower strain? no

EC READS .... 1.2 - 1.4
PH IS 5.6 -5.7

not sure whats happenin, the main stem as started to go purple a bit, and stems on leaves are purple, some bottom tomiddle leaves se to be dryin out and goin brown startin in patches, AND THE TOP LEAVES ARE A BIT LEATHERY LIKE, WAT U THINK GUYS PLEASE HELP
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