Does anyone have any ideas?

[StacyDu]

Autoflower Strains - expert gorilla (x3) + Royal Kush Auto (is light green)
Lights 18/6 - led’s 1000w(x2), 600w(x2) + + 125w cfl (at bottom facing up)
Nutes - green planet (1 part kit)
Temp - day=77f-81f, night=70f-74f
Humidity - 45-50%
Pot Size - 3 gallon fabric
Age - 7 weeks
Soil ph - 6.8

hi everyone, I’ve had this problem going on for about 3 weeks or so and it’s just getting worse. At first I know I could’ve been feeding them more nutes but I’ve tried lowering the soil ph, more cal-mag, more nutes, more phosphorus and nothing seems to be working, it’s just spreading!
I think it may be the soil mix I’m using (Bugs), the co2 bags that are about 1 year old, even root problems!. Any suggestions would be greatly appreciated. The first pictures are from 1-2 weeks ago and the last 2 are from yesterday.

 

[PK]

your old leaves won't get better. The 2nd picture at the end shows that the new leave are looking good.
Do you have more pictuers of new leave developments?

 

[Virgin Ground]

How did you determine the pH of the soil?
Plants don't absorb light through the bottom of their leaves. Don't need the CFLs.

 

[StacyDu]

your old leaves won't get better. The 2nd picture at the end shows that the new leave are looking good.
Do you have more pictuers of new leave developments?

I can post some more pictures but I’m working right now so I’ll post them by 5-6pm tonight. Thanks

 

[StacyDu]

How did you determine the pH of the soil?
Plants don't absorb light through the bottom of their leaves. Don't need the CFLs.

The soil ph was tested by “blue labs” soil ph meter. The cfl is more for the lower bud sites

 

[Virgin Ground]

Not sure why you are trying to lower soil pH if it is 6.8.
Most buffered soil reads between 6.3 -6.8.

 

[StacyDu]

It was at 7.2 when this started..., So I made the water/food at 6.3 or so for a little while to lower the soil ph to 6.8

 

[PK]

what is your soil mix and are you reusing your soil?
something dosnt add up

 

[StacyDu]

70% Pro-mix hp mycorrhizae
30% Destiny organics dark matter - living super soil. Used new soil, never been transplanted, 3 gallon. Maybe I should have done a 5 gallon!

 

[StacyDu]

your old leaves won't get better. The 2nd picture at the end shows that the new leave are looking good.
Do you have more pictuers of new leave developments?

These are from today

 

[PK]

Just wondering why is your light 18/6 when you are in flower?
also, what stage of flower is it in?

i only ask this becasue when you feed it extra nutri it has locked on a either calcuim or iron. Not 100% possitive. I just know that those leaves look very very familure

your pot size does not matter with the issues you are having. However, i would suggust getting a 5g fiber pots to have a better yield

are you using any other nutri,
fertilizers?

 

[bluter]

70% Pro-mix hp mycorrhizae
30% Destiny organics dark matter - living super soil.

you have conflicting media types in the same bucket. you have a non soil and a super soil. the nutes in the super soil are interfering with the nutes you are feeding and throwing your balance way off.

next run decide if you are going living soil or HP promix. the two are diametrically opposed and work against each other.

 

[PK]

well ontop of that i think he mentioned he is using nutri asa well

 

[StacyDu]

Just wondering why is your light 18/6 when you are in flower?
also, what stage of flower is it in?

i only ask this becasue when you feed it extra nutri it has locked on a either calcuim or iron. Not 100% possitive. I just know that those leaves look very very familure

your pot size does not matter with the issues you are having. However, i would suggust getting a 5g fiber pots to have a better yield

are you using any other nutri,
fertilizers?

It’s 18/6 because they’re autos, 18/6 since they came up. I’m using green planet nutrients (1 part kit) + plus a little bit of cal-mag. They should actually be finished in a few weeks, they’re almost 7 weeks. It may be calcium because I know green planet nutes have a little bit of that in them. I figured I should feed them a low dose of cal-mag on top of their feed because my last grow had calcium deficiency and I used the same nutes, but I guess every strain likes certain levels of different nutes. I may have over did it with calcium

 

[PK]

got ya! just give her water and let her finish

 

[StacyDu]

Thanks a lot!, I appreciate your help

 

[bluter]

looks like two issues concurrent. my best guess is phosphorus and calcium.

frankly can't tell for sure if one is in excess locking the other out.

 

[bluter]

i see @Emilya is on tonight..

let's see if she'll chime in and end it. she'll know.

 

[StacyDu]

Thank you!, they only have a few weeks left so maybe I’ll just give them water for now until things clear up a little better

 

[Justin Goody]

This is kind of what potassium overdose looks like on my plants, when I give them too many additives on top of the MC. This is more of a unique situation with the mixed soils and everything, but one of the rare instances where flushing sounds like it actually might be the right call.