Indoor yellowing plants week 4 need help last 4 grows failed

[Trichome farmer]

hello afn so have a buddy who is having some big issues right now he is losing his plants last few grows so heres the info i can share no permission for pictures sorry
r/h very high
temps hi/lo 18/23c
food in e.c 1.2 at 5.8ph
food out e.c 0.4 at ph 6.8
plants go into flower healthy and by week three are yellowing fast im thinking it has to be a ph problem resulting in Mag def but cant figure out the source base water is good run to waste waterings same brand of coco and nutes as my other freind without these issues any help of tips would help out also the pants keep going hermie
@Waira maybe you could steer me in the right direction

 

[woody]

That ph runoff sounds dodgy, i know the runoff test isnt accurate but thats pointing to a really high ph.

Can he be sure of the pens accuracy.

 

[Trichome farmer]

That ph runoff sounds dodgy, i know the runoff test isnt accurate but thats pointing to a really high ph.

Can he be sure of the pens accuracy.

thats was my suggestion im going to go over tomorrow and use mine see if its off would that account for the hermie issues also

 

[Hypathetical Gardener]

Just throwing it out there... Is switching to a soil grow next round possible? It may get (name) closer to harvest without as many issues.

Fire one off for me [emoji108] HG

 

[Trichome farmer]

Just throwing it out there... Is switching to a soil grow next round possible? It may get (name) closer to harvest without as many issues.

Fire one off for me [emoji108] HG

he has been there i dont think he will want to go back it was all good up untill these few last grows so somthing is missing or changed

 

[Waira]

hello afn so have a buddy who is having some big issues right now he is losing his plants last few grows so heres the info i can share no permission for pictures sorry
r/h very high
temps hi/lo 18/23c
food in e.c 1.2 at 5.8ph
food out e.c 0.4 at ph 6.8
plants go into flower healthy and by week three are yellowing fast im thinking it has to be a ph problem resulting in Mag def but cant figure out the source base water is good run to waste waterings same brand of coco and nutes as my other freind without these issues any help of tips would help out also the pants keep going hermie
@Waira maybe you could steer me in the right direction

- mate, I don't have near enough info here,... fill out that patient form in the colored section above here, just c/p it into here and fill in,... no pics, even of just leaves is going to hamper my diagnostics too,....
-- so this is also a coco grow... What is the brand? Is it being reused?
-- drain to waste, with how much run-off each time?
-- what nutrients brand? NPK #'s, any other supp's,...
-- what strains and breeder, photo or auto? ... and you say along with symptoms, they are going hermie? And only after transition do symptoms start?
--- an equipment check is in order, pH and EC if for no other reason than process of elimination,...

.... I'm with Woody, that pH on the run-off is just bizarre, I have no idea how a coco medium is raising the pH that much,... most (if any?) have no lime in it, unless he added some? ... EC r-o is really low, so if it's a solid reading, salt build up doesn't seem to be an issue,... or a bad batch that still full of excess K and Na,...
... usually, environmental snafu's are a more likely cause for hermies, not so much nutes,.. he's not monkey-fucking with any illicit hormones is he?

 

[Trichome farmer]

- mate, I don't have near enough info here,... fill out that patient form in the colored section above here, just c/p it into here and fill in,... no pics, even of just leaves is going to hamper my diagnostics too,....
-- so this is also a coco grow... What is the brand? Is it being reused?
-- drain to waste, with how much run-off each time?
-- what nutrients brand? NPK #'s, any other supp's,...
-- what strains and breeder, photo or auto? ... and you say along with symptoms, they are going hermie? And only after transition do symptoms start?
--- an equipment check is in order, pH and EC if for no other reason than process of elimination,...

.... I'm with Woody, that pH on the run-off is just bizarre, I have no idea how a coco medium is raising the pH that much,... most (if any?) have no lime in it, unless he added some? ... EC r-o is really low, so if it's a solid reading, salt build up doesn't seem to be an issue,... or a bad batch that still full of excess K and Na,...
... usually, environmental snafu's are a more likely cause for hermies, not so much nutes,.. he's not monkey-fucking with any illicit hormones is he?

-Problem: (brief description) stated above

-Medium/grow method: plagron coco bricks

-Feed and supplements used: snopp doggs premium nutriants fed once daily with 3 liters of nutriants with about 1 liter of run off e.c stated above

-Water source: well water ph 5.5 -6.0 . e.c 0.2

-Strain and age: orange bud . maple sherbert a few others also dosent seem to be starin related

-Climate: stated above humidity is high temps are pretty perfect from what i can see

- Light used: 600w hps 18-24 inchs from plants .

-Additional info: How long have the plants been affected?...How fast did symptoms appear?... Anything else you think might be relevant..
plants seem fine and healthy untill put into flowering then begin to yellow classic mag def looing fan leafs

--Pictures including WHOLE PLANT PICS, and troubled leaves.. use normal light or flash as other light sources ruin color rendering, critical for diagnostics! no pictures sorry but trust me there is no other visible signs than the yellowing

 

[elcoloan]

first let me clarify I'm still learning alot, read alot, and am doing my own tests right now with a friend... We do all coco with an inch of perlite in the bottom.

Now... isn't it normal for run off pH in coco to come out 1.0 diffrent than input pH or simply go crazy for no reason? i don't know where i read that, but it happens to me with my seedlings too, and since i read that i haven't payed much attention to runoff pH. It would be nice if someone could confirm this.
Also... I used to feed at 5.8 pH too, but feel 6.0 makes my seedlings look better. I have mag issues due to unbuffered coco and no cal-mag additives at hand right now... 6.0 ph lessens the symptoms in my case. So, from my short experience with this, I'd suggest your friend use 6.0 instead of 5.8 pH for his waterings/feeds.

also, my 20-25 days old seedlings (bagseeds, probably photosensitive regulars) are getting 1.0 EC feeds and seem hungry, which i can tell by the low runoff EC i get (0.4-0.5) and their appearance (not yellow, but the lower, older leaves look lighter than the darker green of the younger fan leaves)... so maybe your friend needs to increase dosage a bit as do I?

 

[Trichome farmer]

first let me clarify I'm still learning alot, read alot, and am doing my own tests right now with a friend... We do all coco with an inch of perlite in the bottom.

Now... isn't it normal for run off pH in coco to come out 1.0 diffrent than input pH or simply go crazy for no reason? i don't know where i read that, but it happens to me with my seedlings too, and since i read that i haven't payed much attention to runoff pH. It would be nice if someone could confirm this.
Also... I used to feed at 5.8 pH too, but feel 6.0 makes my seedlings look better. I have mag issues due to unbuffered coco and no cal-mag additives at hand right now... 6.0 ph lessens the symptoms in my case. So, from my short experience with this, I'd suggest your friend use 6.0 instead of 5.8 pH for his waterings/feeds.

also, my 20-25 days old seedlings (bagseeds, probably photosensitive regulars) are getting 1.0 EC feeds and seem hungry, which i can tell by the low runoff EC i get (0.4-0.5) and their appearance (not yellow, but the lower, older leaves look lighter than the darker green of the younger fan leaves)... so maybe your friend needs to increase dosage a bit as do I?

thanks for your input mate im with you still learning

 

[Waira]

..overlooked the really high RH%,.. how high Stoney, like 75+%? This can really start to screw with transpiration rates (read up on vapor pressure deficit, VPD, in the Reference section, nice article there, makes things more clear),... think of the whole vascular system as a giant wick, roots up to leaf tips; water is evaporates out of the stomata opening, while CO2 is taken in,.. this has a drawing effect on both water and nute transport, so if something jams that up, the flow starts to drag more and more, inducing all kinds of potential problems, but odd nute defc.'s are among them! The nutes may be there, but just not getting taken up fast enough, forcing the plant to start scavenging what mobile nutes it has from leaves (mobility refers to the ability of the plant to translocate them from older established tissues to new growth where it's more needed; not all nutes are mobile, some poorly, or not at all; this is a key diagnostic aspect when troubleshooting-- where the trouble is on the plant),... it's like staving to death sitting in a bowl of soup!
All that said, the odd pH drift remains a mystery, and that's a big deal here, RH% aside,....
.. water is nice! Again, how much run-off is he doing when he feeds? Is this guy coco savvy, know all the do's and don't's? ....gear in good working order?
... yellowing from bottom up, top down, mid level,..? Again, no pics makes this iffy,....

... that brick coco, does it need specific preparation solutions, or do they say its good to go after hydration?