Over watering?

[DevilDog_0651]

I assume the leaves are curling due to over watering? Letting it dry out havent watered in 4 days.

 

[AutoWonders]

It would behoove you to fill out the infirmary form. And if you can take another pic without led on, that would be more helpful.

 

[DevilDog_0651]

Ok sorry. Will fill it out when i get home.

 

[Arthur]

Ok sorry. Will fill it out when i get home.

We've all done it!

Just a guess, low rH?

 

[DevilDog_0651]

 

[DevilDog_0651]

-Problem: Stunted growth
-Medium/grow method: Soil, don't have an actual product name as I made this mix https://www.royalqueenseeds.com/blog-the-best-soil-for-growing-autoflowering-cannabis-n904. I substituted compost for cow manure

-Feed and supplements used: Started with generic Miracle Grow plant food, now have actual nutrients from the grow shop
-Water source: Tap water, was not checking pH until roughly 1.5 weeks ago, it's now at 6.4
-Strain and age - Pineapple Autoflower, purchased seeds from Growers Choice seeds. 4.5 weeks from sprout...
-Climate: First week the night temps got looooow, like 40 degrees. This has been corrected, and the swings are roughly 66 to 75. Humidity swings between 24 and 48%
- Light used: 600W Viparspectra LED (280 draw) Started at 12/12 week 1, moved to 20/4. Now at 24 on since stunted. Currently at 23" from top of plant. Lowering the light and going 24/0 caused it to 2x in size in two days

I did not realize how yellow they were, now I know why you all want pics without LED on...They looked nice and green with the light on. I foliage fed them a few minutes ago with this seaweed tea I got from the grow store.​

 

[DevilDog_0651]

We've all done it!

Just a guess, low rH?

Its anywhere from about 24 to 48 usually, sometimes closer to 60 but thats not often

 

[Arthur]

Should be 60 up... little ones don't have the root system to support the leaves yet.

Either get the room/tent rh up, or make a humidity dome. And your temps are still low, 75 lights on is HPS temps. LED need to be 78 to 84 lights on for optimal growth. Have had decent runs in the upper mid 70s, but growth increased drastically when the leaf temps were brought into specs. Lights out 10* below lights on. Leaf temp, not room temp, leaves will be 2* lower than your environment normally with LED.

There's other issues in play here, but temp and rH are a big part of good growth with autos, you just can't make up the time like you can with a photo.

 

[Arthur]

And cal/mg, didn't see it in your feeds. Cal/mag is a must with cannabis and leds... hell pretty much with cannabis in general...

 

[DevilDog_0651]

Ok, thanks for the response Arthur. The growth stuff i use has cal and mag. Is this enough you think? I will see what i can do to increase the temps.