hi guys. i need your help. i'm trying to grow two plants - this is my first time growing. they are about 2 months old and they were growing quite rapidly. recently they have plateaued and they have started turning yellow in the leaves. The plants are 6-8 inches tall approximately and they are in constant light. They are also watered daily. To make the growing setup I took a medium sized mixing bowl and cut a hole in the bottom to fit a compact fluorescent light bulb. I then wrapped the whole bowl in foil and this serves as my light (see photos below). I then cut out a whole for my light in the top of a box. The yellowing began a little over a week ago and I originally thought that maybe the light was too close to the plants. To give the plants some more space between them and the light I stacked some piles of books to raise the box up higher. This does not seem to help as the plants have just yellowed even more. So guys, I need your help. I am hoping they are still salvageable so please any advice is great. Thank you.