@Iochroma Hi, I moved the sheer curtains way over to the side and got myself a little grow light.
I have lights in other places of my home and I gotta say, the plants do pretty well! I guess you're right, could be the lighting isn't bright enough for my plants to use up the water they were given.
I used to say (for aquarium plants), light is the gas petal for your plant growth. Everything else, (fertilizer for the aquatic plants) is provided according to how much light is given.