Deficiency?

[Titanium Camel Toe]

Hi!
What’s causing those little pale yellow spots on the lower leaves to appear ? Am I high/low on CalMag or something else? Thanks for helping! Last photo is day it went in. 9-21-19
DWC
Mars reflector led $100 one
RO
Advanced nutrient MGB 1/2 strength if that
CalMag
Hydrogaurd
GH rapid start root enhancer
Light on 24
H2o temp 77F
pH 5.9-6.3
PPM 440
EC 995 us/cm.....guess that’s .995?
JackHerer auto
Roots look
Change res weakly

 

[Shrederr]

Calcium deficiency.

What's your water source? if tap - whats the ec?
How much calmag do you feed?

 

[Proph]

That definitely looks like a calcium issue. I would lean towards it being caused by a lock out. Due to either a ph issue, or too much of one nutrient, which will lock out the other (meaning that too much ca will lock out mg, and vise versa).

 

[Titanium Camel Toe]

I use RO water that’s around 25 ppm. CalMag 10 ml

 

[Titanium Camel Toe]

Ppm 445 ec 995

 

[Titanium Camel Toe]

I’ll do a new batch of nutes and up my CalMag. I’ve been watching pH daily, it stays between 5.9-6.3, should I bump it down to 5.5?

 

[Proph]

What is the soil ph? Do you have a soil ph probe?

 

[Titanium Camel Toe]

DWC hydro

 

[Titanium Camel Toe]

Should have posted in that section I guess...