Yellow leaves

Hello,

Im growing 6 autoflowering plants under 600W greenpower 18/6 light cycle .
PH is 6.0-6.2, Temperature 24-26c under light.
I start to feed at the beginning of week 2.

One of the plant's shows green leaves , it's something i need to worry about ?

Looks like root trouble. Specifically lack of oxygen. This can happen from overwatering, not enough airation in media, disease , etc. hard to pinpoint with limited info.

Also, see how the leaf margins are curling up a lil? FWIW, this happens from excessive heat. Idk what 26C is because im a stupid american and we are yet to use the metric system, even tho it is a better system.

The left plant looks very well and right plant has a bit yellow leaves I think it is calmag deficiency.

all the 6 plant's got the same care , only this one show's problems . can it be something with genetics ? because i remember that the yellow leaves show up few days after germination .

26C = 78F

Paxuist said:

Hello,

Im growing 6 autoflowering plants under 600W greenpower 18/6 light cycle .
PH is 6.0-6.2, Temperature 24-26c under light.
I start to feed at the beginning of week 2.

One of the plant's shows green leaves , it's something i need to worry about ?

View attachment 3590414

View attachment 3590413

View attachment 3590411

Click to expand...

Teris said:

The left plant looks very well and right plant has a bit yellow leaves I think it is calmag deficiency.

Click to expand...

Very possible. Ive had plants look similar w cal mag def. good guess. I would be inclined to agree

However, OP- u need to rule out other possibilities before u add any nutes tho. Adding nutes without knowing could make things worse. If u dnt know what im talking abt, then u need to do way more research before starting a project like this.

Paxuist said:

all the 6 plant's got the same care , only this one show's problems . can it be something with genetics ? because i remember that the yellow leaves show up few days after germination .

26C = 78F

Click to expand...

Thats a little warm from what your plants are trying to say. I actually run im the low 70s even upper mid 60s in flower. Some people run way hotter like 85. Photosynthesis peaks at 85F. But ive never been able to run this warm, just my experience.

Sorry, but looks like nitrogen deficiency to me. yellow and only yellowing from the bottom up. cal mag def has more to it than what your lady is showing. Give your roots some tarantula and some zyme and a mild nut feeding after a flush and you will be fine.

update !!!

i decide to do nothing and after 13 days plant looks like :







Should i flush this plant or continue as usual ?