that burn is prolly from a little nute burn. dont add nutes yet. also your leaves are cupping downward(could cup upwards if light is extremely close) because of light stress. if your bringing it in at night with the cfl's dont put them so close so fast. you kinda gotta temper the plants to the different light. i use to get leaves that did that and found out that i put my hid too close to fast. it eventually grew out of it but you dont want to damage any leaves. anyways stop the ferts for now and raise the light a little higher than what your putting it at. if it were an inside plant i would say you could move the light closer and closer every few hours (2 times a day) untill desired height but your transfering it outdoors all the time.