Jefferstone, sure looks to me like your candy kush is suffering from heat stress or is losing more water than it can retain, what's your humidity? Notice how the leaf edges are rolling inward, that's a sign of the plant trying to preserve water. At six weeks your plant should be showing pre-flowers. Do you know about pre-flowers? Just curious, did the concoction work, did it get rid of the gnats? Yeah it's a lot of money but my room is strictly for growing, nothing else. I have two lights, two six inch fans, one four inch fan, a six and four inch filter, an air conditioner, a dehumidifier, hundreds of dollars of nutes, more fans, etc, etc. For me, there is nothing like sharing with my friends, giving them damn good weed at even better prices. I've never charged more than two forty an ounce, and could, easily. I just like to make back what it cost me and have a few ounces left for myself until the next grow finishes. The more I have to share with my friends, the better. After two years, I don't feel like it costs me anymore, if anything, I feel like I gain with every grow. As you can tell, I'm not in this for the money, it's way more than that for me.
cof, you couldn't have put it more accurately. The satisfaction of smoking your own labor of love is priceless.