Help with deficiency

[arquette]

I need help with these two plants. Both plants are in Roots Organic with Natures Living Soil. Day 67 from seed for both. Mars Hydro II 700. So far both plants have been given water only. Looks to me that that is not enough. First photo Cream Mandarine leaves.Second photo is Glueberry leaves. They both look to be suffering from same condition .Purple leaf stems on both and some purple on stalk on both plants. Anyone tell me what the problem is and how to remedy it. Any help greatly appreciated

 

[namvet25]

I need help with these two plants. Both plants are in Roots Organic with Natures Living Soil. Day 67 from seed for both. Mars Hydro II 700. So far both plants have been given water only. Looks to me that that is not enough. First photo Cream Mandarine leaves.Second photo is Glueberry leaves. They both look to be suffering from same condition .Purple leaf stems on both and some purple on stalk on both plants. Anyone tell me what the problem is and how to remedy it. Any help greatly appreciated
View attachment 1078392 View attachment 1078393

Picture of whole plant would help.Start feeding nutes with cal/mag and don't worry about purple stems because this is normal in some strains.

 

[Waira]

......looks like P defc. to me... this is a mix-in amendment, right? I'd look into a PK booster of some kind...
Also, get a soil pH probe for in-pot measurements, just to be sure things are in range... I know what "they" say about organics, but off-pH can and does happen with them, it's just less likely...