HBSS in EarthBoxes progressive lightening of newer leaves.

[WildBill]

Pulled the other two girls out to get down with the problem girls. I added a tiny bit of yucca powder as a surfactant to rain water and well misted the bare media. Added a fairly thin layer of Timothy hay and then thoroughly misted it.
There are improvements on both girls, but more so on the left. I guess because she was less affected. Her yellowing has greened up a good amount. There was some progress on the right, but she was hit harder, so I expect it to take longer for her to recover. The positive thing it that there has been no further progression or decline. And that makes me happy.

By the time I finished with everything, the girls were a little pissed at me for maneuvering them around to apply the hay..
Hopefully they both continue to improve!


Again, they are greener than what the camera shows. i need to see if my clip ons for my glasses will show up better.


Right HBSS..........slight improvement, but any is good

Left HBSS .....far more even color

The tent

 

[WildBill]

Girls continue to improve and grow.
Left HBSS is still progressing better and getting greener
Right HBSS is still improving. New growth is better and there are still unaffected areas..
Upped the VPD to hover around 0.8kPa
Lights are now 25on above canopy.
All will get another "treatment" when 7gal girls need water next.

 

[low_and_slow]

Glad they're on the mend!

 

[WildBill]

Glad they're on the mend!

Thanks man!
They seem to be coming around.

 

[WildBill]

The girls are better and growing like crazy. They seemed to react well with the last microbe infusion. Too soon to see any response to the barley juice from last night, but the looked well this morning.

Things are not optimal though. There is no more random brown spotting. There are still older fan leaves not affected and very green. There is still an underlying condition as evident in the lighter color on new growth. I don't see how it could be a Mg def from too little Mg, but something is limiting the availability. Could I add some fulvic acid to maybe increase the efficiency of the uptake of what the plant is struggling to get?
With limited diag tools to check the Ph of the media, I just don't want to just throw something out there.
More Suggestions?

 

[WildBill]

Here’s some interesting info! Maybe someone can make something of this.

So I take this combo Ph/soil moisture probe and take some samples.
Stomper and Kong register a Ph of 6.6 and 6.7 respectively.

On the right HBSS, the harder hit, I took a sample at the plant end and a sample at the far end. Plant end registered 6.7 and opposite end registered 7.0
On the Left HBSS, it registered slightly less than 6.7at the plant end and slightly less than 6.9. I know this probe isn't accurate, but it sure can show a trend.

Here's some thoughts:

The more normal ph is in the area where the lights couldn't heat the media as much with the plant shading that area.

The more normal ph is also in the area where the plant roots are VERY thick. I could feel the resistance on insertion of the probe vs very little on the opposite end

Meter
Amazon product ASIN B00NTPVHOG

 

[pop22]

I'd say they need a tad more Phosphorus

The girls are better and growing like crazy. They seemed to react well with the last microbe infusion. Too soon to see any response to the barley juice from last night, but the looked well this morning.
View attachment 1288559

Things are not optimal though. There is no more random brown spotting. There are still older fan leaves not affected and very green. There is still an underlying condition as evident in the lighter color on new growth. I don't see how it could be a Mg def from too little Mg, but something is limiting the availability. Could I add some fulvic acid to maybe increase the efficiency of the uptake of what the plant is struggling to get?
With limited diag tools to check the Ph of the media, I just don't want to just throw something out there.
More Suggestions?

 

[WildBill]

I'd say they need a tad more Phosphorus

Can you elaborate on your reasoning?

 

[pop22]

My apologies! I meant to say Calcium. The immobile nutrients are the ones that show yellowing in new growth, Ca, S, Fe, B, Mn ( Manganese ), Zn, Cu. The most likely candidates are Ca, and Fe ( Iron ), With Ca being the most likely. Could still be lockout.

Yellowing at the top

Can you elaborate on your reasoning?

Can you elaborate on your reasoning?

 

[WildBill]

My apologies! I meant to say Calcium. The immobile nutrients are the ones that show yellowing in new growth, Ca, S, Fe, B, Mn ( Manganese ), Zn, Cu. The most likely candidates are Ca, and Fe ( Iron ), With Ca being the most likely. Could still be lockout.


View attachment 1288659



Yellowing at the top

Could the heating from the black side out cover cause a reaction from the dolomite that flushed the system with too much magnesium?
Something changed the ph upwards up front.