Yellowing in mid flower!?!?!?

Hello fellow grower well I'm posting this because as the title says I am day 30 flowering today have six plants going 2 strains ok well all plants get same amount of nutes come feed time well 2 of my plants are showing a lot of early yellowing but only the two as you can see in my pic I just don't understand why this is happening I still have 3 more weeks to go so any interesting feed back please do so

I don't know what you can do. Just hold on and it should be good so long as youre boosting P and K

Maybe just feed the plant something with a good dose nitrogen. If they are from seeds then they are probably slightly different phenos. Even if you do nothing, I think they will make it thru fine.

Meh ....if you notice the other strains arnt doing that and just those 2 (same strain Im guessing)... I have a cpl strains that will cannabolize pretty early and no matter what I give em they wont go green again. No worries, its just the strain.. they look healthy which is a key sign they are doing what they are supposed to be doing. GJ overall

Oh shit...you are only 30 days in...up the feeding they are heavy eaters apparently... my bad

Thanks everyone I appreciate the input and yes southerner I am going to hit them with a little of my veg nutes to try and green them up some hopefully it helps

yes i agree with diabolica,what strength you feeding them ,you could also add some worm poo in there with the feed

To be honest oldshol4evr I'm only feeding at a heavy 1/4 strength but the last time a tryed to up the nutes they showed a bit of burn at their tips I'm using general organnics go box but I'm going to hit them a little heavy tonight with nutes I'm thinking 1/2 or 3/4 just to keep them happy. I also I have not flushed so far but I don't think build up could be the problem because it only the two plants

if your going to flush do it first then add the nutrients at 1/4 strength,until they recover i would not increase strength