Yellowing of seedlings in promix hp

[jeff wright]

That'd be the one I'm using.

Promix (looking @ their website) has no inert soil, all of it has time release fertz in it. Promix organic is a 3 month time release, premium is 9 months of fertz in it... premium seed starter has 3 months in it...I don't see one that has no fertilizers in it. Given that, and the overall look of your little ladies, nute burn would be the call if they were in my garden.


Correction, this one seems to not have added fertz, but all the rest doView attachment 790842

 

[jeff wright]

Promix (looking @ their website) has no inert soil, all of it has time release fertz in it. Promix organic is a 3 month time release, premium is 9 months of fertz in it... premium seed starter has 3 months in it...I don't see one that has no fertilizers in it. Given that, and the overall look of your little ladies, nute burn would be the call if they were in my garden.


Correction, this one seems to not have added fertz, but all the rest doView attachment 790842

I love the texture of it, reading the ingredients I thought it would be a awesome medium

 

[Arthur]

After doing some poking around, I found that the HP is a soilless mix. googling promix hp cannabis, I saw an awful lot of issues with ph... definitely not saying this is the issue, but until you can get an accurate ph, I'm kinda leaning in that direction.

 

[jeff wright]

I don't disagree with pH being an issue. However what are you thoughts on a bit of nitrogen deficiency? I mean that medium is so bare and they aren't that young at this point. I've just seen some really similar thing related to N deficiency, not in promix hp specifically, but end result seemed the same.

 

[Waira]

... that stumps me mate, it makes no sense,... only thing I can say is, available forms of N (nitrate and ammonium) are the only forms the plant can absorb, and N, along with several other nute elements are taken up whether the plant needs then or not, it's automatic,... the plant can store some of the excess, but beyond that, it becomes a toxicity issue,... might be she got hit with a fairly sudden release of it in there, going back to soils being undercooked crap,.. I hear back in their hayday, they had this mountain of redwood compost, well aged and weather rinsed that was fantastic for soil building,.. that's long gone now, and nowr they use urea to artificially age the forest composts,.. urea needs to be broken down by microbes into other forms, eventually into the above available ions,... best guess is that bag was still too fucking raw, and the plant/microbes finished the job up and was overwhelmed a bit by the amounts released,...? Is it progressing, or halted now?