PURPLE MAZAR trouble

What is your experience level? Novice

What type of hydro set-up are you running? Coco

Your Equipment:
A) Type and wattage of lights. 150W HPS with 2x24w 10 000K T5s
B) Distance from tops? +/- 1ft.
C) Reflector type? Sun System
D) What are the bulb wattages, kelvin ratings, and schedule? 150w HPS 2x24w at 10 000K
E) Is there a consistent fresh air supply? Yes, 3 intakes on my DR40
F) Do you have an exhaust fan and a circulation fan? Yes, 1 4" PC case fan
G) Size of reservoir? 1.5L of coco
H) What medium if applicable. Coco

Your nutrients and water:
I) If using rockwoll for clones or seedlings, did you rinse the cubes well, with properly ph'd water?
J) Source of water. Tap, pH'd to 5.5-6.0
K) Specific brand and N-P-K ratio for each bottle.
Advanced Nutrients 1-part Grow at 1mL/L NPK=2-1-6
Hydrotek Power Pak at 1mL/L no NPK
Grotek CalMax at .25-.5mL/L (don't got TDS meter) NPK=2-0-0
L) What is the ec/ppm of your unadjusted tap (or filtered) water? N/A - no TDS meter
M) What is the ec/ppm of your nutrient solution?
N) What is the temperature of your nutrient solution? (reservoir high and low temps)
O) Does your ec/ppm show a rise or fall when you do your daily PPM check?
P) Does the ph fluctuate? Coco tends to be stable with pH
Q) Do you foliar feed? If so, with what, how often, and at what time do you
spray? No
R) How often do you replace reservoir water/nutes? What does it look like before changes? (clear, foamy, green, brown...)

Your growroom:
S) What size of closet, room or hut? 40cm x 40cm x 120cm
T) What are the temps and humidity levels while lights are on? ...With lights off? Fan goes off when lights go off in attempt to decrease temp changes at night
U) Have you seen signs of insects in the growroom? No
V) Are the roots long and white, or brown and slimy?Can't see them roots

Your strain:
W) What strain are you growing? Indica dominant PURPLE MAZAR woo!
X) From seeds or clones? Seeds
Y) Is this an autoflower strain? Yes

Notice the leaves are curling down? I'm thinking that it's heat stress or that maybe the T5s are making the leaves curl downwards because the plants want that light.