new growers forum

I'm a new grower and I recently noticed that a few of my plants have an extremely bright green color in the middle. I'm not sure if this is a nutrient deficiency or just me looking too much into it. Also, on the GSC I've also noticed some color changes on the leaves I have no idea what that...

I am a new forum member but have been lurking here for about a year. Great forum! I have a seedling in a Solo cup and am transferring it to a 3 gal grow bag. I would like to move it into the tent where I have 2 autos that just started to flower. I have both the veg and bloom on. I don't...