What to do

Yes, try briefly turning off the colored lights during the next period when they're on, and take a photo with your phone's flash on. These just look green.

 

I think you need to turn off the purple LEDs, my friend. They are still coloring your photos. I can see the yellowing, and if I were forced to guess I would say it's nitrogen deficient, but if I were you I would get a second opinion.

 

looks like a lack of nitrogen . Once in flower you do not want too much nitrogen and some fading to yellow as it gets further into flower is normal. Tiger bloom has some nitrogen in it how much and how often are you feeding ?

 

Also would like to add that, if the plant is only very recently flowering, you might run into a nitrogen deficiency because it's trying to stretch. It needs nitrogen to make those stems grow.

 

Need help with autos? Welcome

SB & GA’s autoflower myth busters thread

I would post your pictures in one of these threads. Some of the most knowledgeable auto growers are in those threads and would be able to help you out. I've only grown a few autos and I know they are very sensitive to liquid ferts like fox farms, so I wouldn't do anything until someone from one of those threads gave some advice. Based on the view I can see of your pot size you shouldn't need any additional nutes, the soil should be able to get you thru to the finish.

 

Why would ruderalis be more sensitive to fertilizers than any other species of cannabis?

 

I've only grown 3 Auto plants so I don't have a ton of exp in that arena, but from my understanding due to their short veg/flower time, they require far fewer nutrients making it very easy to overfeed, and very difficult to come back from an overfeeding.