What the *^%# is going on here? ?

[Dukeallday]

So. These plants are the same age and have had the exact same treatment their whole lives. The green healthy one is Cropking white widow. The other is mephisto Chemdoggin. The Chemdoggin looks like it has deficiencies and burn at the same time, but the WW that's had everything the same, looks fine. No burn and no deficiency. I don't get it. Surely that indicates no ph issues because that would affect both of them. AN takes the feed water to between 5.8-6.2 but the soil ph meter is at 6.6 in both
About 50 days from sprout
AN grow and now on bloom
OF

My grow link
https://www.autoflower.org/threads/mephisto-chemdoggin-and-cropking-ww.60929/page-5#post-1580699

 

[Waira]

hey bud! ... well, different strains, different tolerances, demands,.. plus each pot is it's own little ecosystem too, so an in-pot pH check is in order, just to be sure,... budding looks good, so some of what I see says the more uncommon symptoms of P defc. that overall yellowing,.. but lowers have an advanced look to the symptoms, muddying the diagnostics waters,.. N defc. is typical at this time, causing overall yellowing, green veins sometimes; P is mobile within the plant too, and usually will be drawn from lowers, but when advanced, it gets pulled from higher leaves.... are you using Ca-Mg at all? Mg defc, can also cause lowers to go yellow interveinally,...

 

[Dukeallday]

hey bud! ... well, different strains, different tolerances, demands,.. plus each pot is it's own little ecosystem too, so an in-pot pH check is in order, just to be sure,... budding looks good, so some of what I see says the more uncommon symptoms of P defc. that overall yellowing,.. but lowers have an advanced look to the symptoms, muddying the diagnostics waters,.. N defc. is typical at this time, causing overall yellowing, green veins sometimes; P is mobile within the plant too, and usually will be drawn from lowers, but when advanced, it gets pulled from higher leaves.... are you using Ca-Mg at all? Mg defc, can also cause lowers to go yellow interveinally,...

Ph in the pots are both at 6.6, unless the meter is bad, which I don't think it is because it gives different readings for house plants. AN has ca and mg and I'm hesitant to up the dose because it looks like they also have burn, but I'll try it anyway lol. Thank you for the reply.

 

[FullDuplex]

hey bud! ... well, different strains, different tolerances, demands,.. plus each pot is it's own little ecosystem too, so an in-pot pH check is in order, just to be sure,... budding looks good, so some of what I see says the more uncommon symptoms of P defc. that overall yellowing,.. but lowers have an advanced look to the symptoms, muddying the diagnostics waters,.. N defc. is typical at this time, causing overall yellowing, green veins sometimes; P is mobile within the plant too, and usually will be drawn from lowers, but when advanced, it gets pulled from higher leaves.... are you using Ca-Mg at all? Mg defc, can also cause lowers to go yellow interveinally,...

I think your on to something here mate, the lower leaves tell it to me or at least from what i can see in the photo.

Looking at this shot, i can see the MG deficiency in at least two stages. Large Cola bottom right has advanced on the top almost into the sugar leaves. The margins and veins are screaming at me. Which is why i think that you are on to something.

Ph in the pots are both at 6.6, unless the meter is bad, which I don't think it is because it gives different readings for house plants. AN has ca and mg and I'm hesitant to up the dose because it looks like they also have burn, but I'll try it anyway lol. Thank you for the reply.

With her overall paleness as well as what i saw above i think that there is something going on with Mg, i have also seen weird shit happen to the lower leaves when this starts attacking from above. I have to agree maybe bump the Cal-Mag up a bit.

Are you growing under LED or back to the LEC? Also if you are interested in running platinums in a 3x3 i have a review on them and the bubba kush grown under the exact setup you are asking about.