Seedling True Leaves Help

I went to check on the Babies and while examining parts of the true leaves I noticed that the tips of the leaves looked like they were crinkled or deformed for some reason. I am using Canna Coco w/ Perlite, Nutrients:5ml of A+B for on Gallon of water. I feed them once to twice a day depending if they need. Light: 150hps w/ a few CFLs strategically placed. What would cause the crinkling of the tips of leaves? The leaves look green and healthy just crinkled at the tips. There is no discoloration.

Thanks RIU.

if they are turning to a crunchy type of brown and more of the leaf is yellowing its probably nute burn or wacked PH..most likely nute burn if ur feeding baby plants nutes. most soils will feed for atleast 30days.

if there is no discoloration and they are a healty green it could be moisture stress/heat stress. how close if your fan and what are your temps.

u need to explain your setup to us and some photos would help so much.

Basically I lost my camera so pictures are gonna have to wait, Ill try to be descriptive as possible. I have the 150hps about 10in away from the tops of the plants (I use the hand test, if my hand feels hot the plants are hot) and when I made the nute soup I did 5ml of A+B Canna nutes and when gallon was made, the ph was 6.3 which I understood was a good number, judging from the Jorge Cervantes video but I am beginning to believe that I should take him with a grain of salt. The plants are lush dark green and have 2-3 fans circulating air around them constantly. I have also been thinking about getting another light possibly a HID. However I do have a T12 set up that could be used if I buy T8 bulbs. only problem with it, is its to big for the area of these plants. Thinking maybe setting it up vertically along the edge along a corner of the grow room. Any Suggestions?

Here is more detailed explanation of my set up. https://www.rollitup.org/newbie-central/378092-need-help-first-grow-a11.html

another light when it's too hot in there??

make sure the intakes are close to the ground, air is slightly colder.

I have two intakes both located at the bottom of the growbox. They are the simple bathroom exhaust fans that I pick up from homedepot flipped around to suck air into the Growroom, the Outtake is located at the top using a 6in Duct Booster. What can I do it make it colder in there????