Leaf Yellowing Diagnosis

[P33LUM16]

I am trying to figure out this problem. I noticed that the new shhots are starting to yellow. Im using the minimum amount ok f cal-mag at 3ml gal. Also im using Sumatran natural bat guano at 8-3-1 npk. Ph is at around 7. On a 18-6 light cycle. Humidity is fairly low due to the surrounding at around 35-40%. 75-80° Using filtered water. Anyone know why they are yellowing?

 

[callumc420]

I use a simple 3 part system the only time plants go like that is when I start flush I don't know the diagnosis but simply your plants are underfed

 

[P33LUM16]

K. I'm wondering if I should bump up the guano? Thanks for the input

 

[Jedthedog]

You should look into earthworm castings very beneficial,and if you went one step further with a worm casting tea all that much better ..

 

[fanleaf]

Theres absolutely nothing wrong with the yellowing. That can be a normal hormone change late in the veg cycle. It's telling you she's ready to go into flower anytime you let her. She's fine, just fine. Don't sweat that a bit!

 

[P33LUM16]

Theres absolutely nothing wrong with the yellowing. That can be a normal hormone change late in the veg cycle. It's telling you she's ready to go into flower anytime you let her. She's fine, just fine. Don't sweat that a bit!

Thanks. My auto flower is in with them and gonna have to switch to 12/12. Will they be fine if I delay the switch for a couple weeks?

 

[P33LUM16]

Thanks. My auto flower is in with them and gonna have to switch to 12/12. Will they be fine if I delay the switch for a couple weeks?

Sorry. They as in the two regular. They are Purple Nice Guy and Blue Dream by the way. The auto is Northern Lights

 

[fanleaf]

Yes, they will be just fine. It's just a sign of maturity.