Morning. From what I read. The miracle grow may be part of your problems. My autos only like a little food. And if I feed them to much. I end up with tiny plants. I normally toss them when I see that. Case in point. I have a Fruit punch auto in a 5 gallon pot. I didn’t pay attention to good and started feeding her like my 3 week olds. She basically froze how she was. She still looks healthy. But stopped growing. A smaller pot will get these growing faster on top, as a larger pot takes more time for the roots to grow. A 5 gallon is the largest I ever need for an auto. I have tried 7s before but it was a waste of coco for me. I have pulled 9 oz from an auto in a 3 gallon pot. That tells me a 5 is all I will ever need. @dbrn32 is right for lighting. My viparspectra 600 was only big enough to flower 1 plant in my tent. Mine covered a 2 1/2 x 2 1/2 area for flower. Just a FYI. Before you even think about getting more lights. You should check out the QB or cobb lights. They cost a little more. But night an day grow wise compared to the Chinese LEDs. I do like the vipar for veg though.
I can only go by my experience here. For my vipars. Running just the veg switch doesn’t seem to give me enough good light for veg. if I run both all the time. My plants did really good. I am running a 450 vipar over my seedlings right now with both switches on. They are doing well like that.
This is my first good grow. It shows every one goes through ups and downs when learning. With the help I got in here. I was hooked, and now really enjoy growing. I learn a little with each grow still.
This has the 9 oz auto in it as well as my Blue Dreams and AK 47. Keep asking questions. They will always be answered in here. And normally pretty fast. Good luck with your grow, and you are still off to a good start.
Most of my autos tale about 14 weeks give or take. So you still have plenty of time left for these to grow 