Can you picture the problem?

This is my first grow and I am starting to notice something is going wrong. My girls are 2 and half weeks old. I am using Bubbletonics and my rez temp stayed at about 78F until I received my chiller 1/4 yesterday and set it up. Now it runs at 67F. About a week ago I added nutrients. Only 400ppm worth. I did some research and figured it was a nutrient deficiency so I added some and now it's at 800ppm. PH is 5.8. Last week my AC went out and the grow room got up to 95F! But that was only for one day. It went down to 80F. When I put the chiller in it went up to 95F so today I will move the chiller out of that room and hopefully the temp will go down. Looking at the pictures can someone please help? The are drooping and are starting to get yellow spots.