Ok, so this girl is about a month and a half old, and it's got some issues. The growth isn't stunted, but the old leaves are turning yellow and the third set of leaves was actually crispy when I checked them and I removed the crispy parts, but the 1st and 2nd set are just yellow. The newest growth doesn't really show it. I wasn't nuting when it started, so I assumed nitrogen deficiency and started nuting. The newer growth was greener, but there's still small yellow spots in the middle and on the jagged edges. What is this? And what was with the crispy leaves? I have a soil ph meter, it tells me the ph is at 6.5 -6.6. My temps got hot for an hour or 2 in the high 80s, but that wouldn't cause crispy leaves 5 sets down would it? I normally keep it between 78-82 during the day and high 60s lower 70s at night. Humidity is 30-50%. I'm using jacks nutes, classic. It's a 20-20-20 mix with all the micronutrients. Could this be lack of light? I was using a 150 hps but worked my way up to 1000 when they were ready. The first pic was when I first noticed it and started nuting. The nest set of leaves was like the second pic. The latest set looks nearly perfect. Thanks in advance!