Day 52 Flowering, Extremely yellow. Pic Included

I'm a noob growing OG Kush with Fox Farms Tiger Bloom and a 400 watt HPS.

I feel that she is extremely yellow. She is 52 days into flowering. Is she ok? or what can i do to help her out. Also how much longer do you guys figure she has?
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damn that is a huge plant.. im not expert but that plants looks good to me even with the yellowing,i think its normal ive seen plants like yours a million times before and they all finish

This plant is ok, its just finishing up. Its pumping all its energy to the buds. Next time, I highly recommend getting some overdrive and some protek. Overdrive will make it keep producing in the final weeks of budding when it normally levels out, and Protek is a pro-silicat or however you spell it, and it help with drought. Had your plant been grow in slightly better conditions, the leaves moght not have done this, but dont worry, 57 days is a long time to flower and depending on the strain, they are probably almost done, if not they are done. Yield will depend greatly upon the conditions the plant is raised in. Go to a seed bank and type in your strain and it will give you average flower length. But the best way to tell if they are ready to harvest is to look at the tricromes with a microscope. IT MUST BE ATLEAST 30X. When 50-75 percent of the tricromes turn amber, they are ready. I grow Skywalker Og and average flowering time is about 60-70 days. Be sure you dont let them grow too long also. The is literally a window of prime-ness(If you will) when you will get the best bud possible. It is about a week window and it occurs, like i said, when the tricromes turn amber in color. Lastly, do not mistake the hairs for the tricromes. The tricromes are the tiny, mushroom shaped things that look like little crystals. If you have any more questions let me know. Peace Love and Treez -AV-