Leaf color problem

I see some tacoing so I would say your lights are too close or too bright either raise them or turn them down, also it looks like a water deficiency either too much or too little, or they could be getting hungry, or the leaves could be getting ready to just fall off because they're not needed anymore. I am new to growing so please don't take this as a law, but I do hope I was able to help. Other than that she looks beautiful man good work.

Beri.. best thing I would do is flush her good then resume ur nutrients..and make sure you feeding the right kind of feed in flowering stage she need more p-k and less n and add cal/mag.. remember tap water has trace minerals in it.. do a pH test on ur liquid after u mix it.. then again after u feed and get a run off5.6 - 7.0 is good u don't want to go pass 7 .. 2wks flower u still have time to fix it she's still growing.. it's closer to week 5 when vertical growth slows to a stop and filling in size starts.. couple of days u can get her in check.. lights not too close to plant I hope also temperature not hot . Middle 70's good......have fun. B safe. Growers 💚 growmie

Pots are too small for the size of the plants- that means small roots so plants are not feeding right. U will be struggling with this the rest of the grow, U cant fix too small pots in flower unless you want to risk stunting them but next grow go up in pot size, U can see the plants dont look right in those small pots. Why would you use such small pots anyways for plants this size? Your plants are eating themselves - I dont even know where to start- There is no info on what nutes your using or any grow conditions so im guessing here- U need to check your Ph first of your nute mix- your in coco so your going to need it around 5.8-6.2 in flower, but you need trace elements ASAP. CAL MAG and iron plus all the macros. what ever your feeding isnt working so change it, feed more or feed more often, and if your not using a decent base nutrient then get one.

Looks like a number of issues are you getting 20 percent run off at minimum when feed/water? Calcium and magnesium look like major issues.