Yellow

[rerun420]

Problem:upper and new leaves turning yellow

Medium/grow method:soil

Feed: and supplements usedrganic general organics grow box

water source:distilled

Strain/age. Photo test run on new equipment. 6 weeks from seed.

light used:2500 watt tmlapy led

Climate:78 with 40% humidity

Additional in a 4x4 grow tent

 

[Big Sul]

How much are you feeding her? What kind of soil?

 

[Don Manzoni]

It seems to me a copper deficiency.
1-Ph range may be messed up.. it should stay between 6-7 in soil.
2-Using distilled water doesnt give to the plant any nutrient so you have to.
I dont know that kind of nutrients you are using but it may not have copper in it so you should give it.

Also copper is a low-mobile nutrient so you may not see improvments in the leavs already affected.

 

[Bill.de.Cat]

What is PH range of water/feed solution? I'm thinking possible lockout.