yellow leaves on 4th wk flowering.

[Suby]

It's funny you should ask that because after erradicating fungus gnats before flowering the ****ers came back in flowering.
I hit them with a solution of 5ml of neem oil in 1L of warm water, I added a few drops of non antibacterial dish soap as a surfactant.
I used this mix of the foliage and the underside of the leaves and I also heavily sprayed the topsoil where the eggs hatch and munch on roots.
I did this only once and about 20 days into flowering and so far I havent seen any adult flies lurking aboiut and all the larvae on my leaves are now gone.
A week later I sprayed the topsoil lightly again to kill any offspring.
As an extra measure I used yellow sticky traps and they work very well at catching pest nearing adulthood so before the breed.
You can add neem to plain water and give it to your plants that way as a safeguard but when they've infested the foliar is the way to go.
Neem is safe to eat and I guess smoke in small doses besides eating bugshit doesn't exactly turn me on, besides they use neem in toothpaste in some countries.

Suby

 

[DRKN_MNKY420]

Listen to SUby and Gladys and THE American!

Spidermites- neem and the hotshot strip worked for me. I have read using neem up to week 4 in bloom. I also tried some insecticidal soap, it worked, but it turned all he pistils on my plant to orange, then they all died. But the thrips I had also died and the buds grew more pistils. So all went well in the end! Good Luck!

Now, by the look of your plants you still have a problem besides the mites. Suby asked what your feeding/waterin schedule is, and HE is onto something. I think you are either over or under watering/feeding your plants. Unless those pics were taken right after you watered, those larger fan leaves should not be sagging down so much w/ a 1k hps. That could have alot to do w/ your problem.

Your ph sounds like it is fine, maybe raise it up a little bit.

I don't pay attention to PPM, but I have read many threads and 800ppm sounds like the highest you should aim for. So back off w/ the strength a little bit.

And stop using the grow nutes after 3 weeks of bloom. I would feed them next w/ 800ppm bloom nutes.

Also, are you soaking the soil and allowing a good 3 days between the time you put anymore liquid into the soil? Just curious, I use Fox Farm OF blend and I feed/water every three to four days. Basically water once a week and feed once a week!

GOOD LUCK, hope I helped a little.
DRKN_MNKY420

 

[Suby]

and she is onto something

That's a HE dude lol.
Suby is what I call my Impreza RS from Subaru.

Sativalicious is not the thread starter, I assume he used the search button and neede clarification on what he found here.
I hop all went well for Mr.Deere.

Peace MKY

S

 

[DRKN_MNKY420]

Sorry Suby, I made the proper adjustments!

I know J Deere is the starter. That is who I am talking to w/ that post. He has mites, was the last thing he said. Which sucks for him, but I think he will do just fine if he listens and then takes action properly.

Not sure what part of my rambling was aimed towards Sativalicious, but it was all intended to help out J. Deere.

Anyways, no harm intended for anyone.
Peace, DRKN_MNKY420

 

[Suby]

lol it's all good man, maybe I'm due for a manlier avatar...


No apoligies needed and the advice was spot on

S