Pale green cannabis plant, help me find the cause

[albagrow]

Hello,

Im on 5th week of flowering. It started on second week of flowering. It begins like this: the plant starting from the top becoming pale green until all the plant become pale green then fan leaves become yellow, plant stems and leaf stems turn red. Leaves start to die plant stunts.



I had the same problem last growing and i lost the crop.



I use sog system watering from the bottom.

11l pots

Soil , plagron grow mix

1000w hps lights

Enriched with co2 grow room

Plagron nutrients:

Terra bloom

Power roots

Pure zym

Green sensation



Aptus:

Regulator

camg boost



I didn't do full dose on 2 Growing weeks and 2 flowering weeks. They said it was underfeeded but im feeding them full and it continue to worsening.



I will attach some pics and videos.



Today i noticed some organism i haven't seen before on runoff water test i did.



Some tiny white worms that look like and some other insect that look like Collembola. Can you confirm that are these one?

Are these harmful? Are these cousing this to my plants?



Any idea how to save my crop?

Thank you!

 

[Ke0ncp]

Sorry I dont have any info but I am tagging along for the ride on this one to see what the group has to say. LOTS of amazing growers here so you will get some suggestions and pointed in the right direction for sure!

 

[Roy Growin]

Do you adjust pH of your nutrient solution?

 

[Sueet]

Yes, the first bug is a springtail, they are beneficial. The second thing seems to be a fly larvae of some kind, tho not fungus gnat because those have a black spot at one end (head). Can't guess at how harmful it might be, but your roots look healthy so likely neutral.

Guessing @Roy Growin is on the right path asking about pH as far as overall plant condition. Also I wonder, since it could be related perhaps - at what point do you add your cal-mag in your feed process?
I'm not super clear on when it should be added for this sort of grow, but it might be important if it is dropping out of solution.