I’m not really sure what this is

[3rd Monkey]

What kind of light, temps, and humidity?

 

[myke]

Some other shots.

Out of curiosity, why did you cut the Ca out of your equation when you suspected it was short?...and it appears from your pics and description you were correct in that assumption.

This also happened last grow with a different strain,I used calmag start to finish on that one.
Perhaps I was using too much as this round its not as bad.
Ill re load and see what happens.

 

[myke]

What kind of light, temps, and humidity?

600 hps,day 81f 60 RH. Night 61~65f dehumidifier keeps it at 50 RH.

 

[3rd Monkey]

600 hps,day 81f 60 RH. Night 61~65f dehumidifier keeps it at 50 RH.

Under HPS rules the LED issue out.

Maybe it's just a Ca whore or your nute line is lacking something. Since it happened before, could be the nutes.

I can't get over how green those leaves are... And waxy. Always like that?

 

[myke]

Under HPS rules the LED issue out.

Maybe it's just a Ca whore or your nute line is lacking something. Since it happened before, could be the nutes.

I can't get over how green those leaves are... And waxy. Always like that?

This plant is in a 5 G rdwc bucket,the other half of my room is in top feed hydroton,in a tray.Same nutes same res.
The tray side is much lighter in color ,there also a mix of 2~4 weeks behind.
Ive dropped N the last 2 weeks ,almost in half.So 4 ml/l bloom ~2 ml/l N .

I have hard water,170 ppm.When this first started I was using calmag @1ml/l.Perhaps Ill try 2ml/l.

edit to add the tray side hasnt show these def yet.

 

[myke]

This is first run with this strain,last one also had dark green leaves.I lowered N last run only 25%.

 

[3rd Monkey]

This is first run with this strain,last one also had dark green leaves.I lowered N last run only 25%.

Makes sense that it's Ca then, with it being in the lighted areas.

Most calmag has N in it but I'm sure you know that.