Week 4 yellowing normal?

[curious618]

Middle of Week 4 flower( 24 days from flip) and I am noticing some yellowing on some of the top leaves. I know leaves tend to yellow during flower but didn’t know if this early is normal? Temps in the tent are 68 degree and 48% RH. Planted in Happy Frog. Feeding FF Trio. Seed is Bubba Kush from Seedsman.

 

[Southernontariogrower]

Brrrrr, they are probably cold, 85 daytime temp is closer to the mark, my tent runs at 90 degrees and they are so happy, think equator which is close to where they originally started their wonderful existence. They like it hot and humid, cooler after buds get big. Summer to grow fall to flower. At 68 humidity should be 50 to 80, 60 to 65 is prime on vpd chart. I'd warm them up a bit as they will grow like weeds. GL

 

[curious618]

Brrrrr, they are probably cold, 85 daytime temp is closer to the mark, my tent runs at 90 degrees and they are so happy, think equator which is close to where they originally started their wonderful existence. They like it hot and humid, cooler after buds get big. Summer to grow fall to flower. At 68 humidity should be 50 to 80, 60 to 65 is prime on vpd chart. I'd warm them up a bit as they will grow like weeds. GL

Yea I’m doin the best I can on that front. It’s in a metal shed outside and with this cold snap temps have dropped like crazy. It’s 17 outside right now....I’m impressed the tent is holding the heat like it does!

 

[curious618]

Brrrrr, they are probably cold, 85 daytime temp is closer to the mark, my tent runs at 90 degrees and they are so happy, think equator which is close to where they originally started their wonderful existence. They like it hot and humid, cooler after buds get big. Summer to grow fall to flower. At 68 humidity should be 50 to 80, 60 to 65 is prime on vpd chart. I'd warm them up a bit as they will grow like weeds. GL

But you think it’s just the cold not a deficiency or anything? Trying to keep her healthy til the end! Don’t wanna mess it up now.

 

[Wizzlebiz]

But you think it’s just the cold not a deficiency or anything? Trying to keep her healthy til the end! Don’t wanna mess it up now.

Cold can cause deficiencies.

I also have a tent in a shed. I added a oil heater from ace hardware for $30. Local hardware store over here.

My temps stay steady where they need to be.

 

[Herb & Suds]

Brrrrr, they are probably cold, 85 daytime temp is closer to the mark, my tent runs at 90 degrees and they are so happy, think equator which is close to where they originally started their wonderful existence. They like it hot and humid, cooler after buds get big. Summer to grow fall to flower. At 68 humidity should be 50 to 80, 60 to 65 is prime on vpd chart. I'd warm them up a bit as they will grow like weeds. GL

85 is too hot unless you have a sealed room and co2 or are growing under LED's

 

[curious618]

Cold can cause deficiencies.

I also have a tent in a shed. I added a oil heater from ace hardware for $30. Local hardware store over here.

My temps stay steady where they need to be.

I’ve got a little heater in the positioned directly behind the desk fan so it’s circulating the hot air. I have a seedling warming mat under the pot as well. Temps seem to hold around that 68-70 mark. But this doesn’t look like a PH lockout or nute lockout or anything? I haven’t done a flush. Wasn’t planning on it unless needed.

 

[Wizzlebiz]

85 is too hot unless you have a sealed room and co2 or are growing under LED's

So many times we all think in terms of what we use. I had to remind myself not everyone grows in soil.

Not everyone grows outdoors. Nor does everyone use white LEDs lol.

It's been a challenge reminding myself as I am giving advise.

 

[Herb & Suds]

Hit it with a foliar feed of the growth nutrient you are using diluted and add calmag to your next feeding

 

[Wizzlebiz]

I’ve got a little heater in the positioned directly behind the desk fan so it’s circulating the hot air. I have a seedling warming mat under the pot as well. Temps seem to hold around that 68-70 mark. But this doesn’t look like a PH lockout or nute lockout or anything? I haven’t done a flush. Wasn’t planning on it unless needed.

If anything you have over fed those plants. I'm seeing a bit of Nitrogen toxicity and nutrient burn.

Between your heat scenario and giving to many nutes you have some fixing to do.

 

[curious618]

Hit it with a foliar feed of the growth nutrient you are using diluted and add calmag to your next feeding

I’ll try that thanks. I water with tap for the cal it has in it. Have been told that’s best for QBs. Think I will still need more?

 

[curious618]

If anything you have over fed those plants. I'm seeing a bit of Niteogen toxicity and nutrient burn.

Between your heat scenario and giving nutes way too early you have some fixing to do.

This is only one plant and I’m in the 4th week of flower. I didn’t feed the first thee weeks of its life. She’s looked healthy the whole time.

 

[Wizzlebiz]

I’ll try that thanks. I water with tap for the cal it has in it. Have been told that’s best for QBs. Think I will still need more?

QBs should absolutely be at a higher temp. Not question about that.

 

[Wizzlebiz]

This is only one plant and I’m in the 4th week of flower. I didn’t feed the first thee weeks of its life. She’s looked healthy the whole time.

I readjusted my comment. Regardless you have nitrogen toxicity in that plant. That's a issue for flowering.

 

[Herb & Suds]

I’ll try that thanks. I water with tap for the cal it has in it. Have been told that’s best for QBs. Think I will still need more?

Obviously not enough
I run straight well water but still have to add microbes

 

[Herb & Suds]

I readjusted my comment. Regardless you have nitrogen toxicity in that plant. That's a issue for flowering.

Good point
I should have ask what lights he is using

 

[Wizzlebiz]

I also want to give you a warning. Using a fan powered heater is incredibly dangerous.

One leaf falls off that plant towards the back of that heater. It can get sucked into the heating filament and literally spit fire out the front.

Get a oil heater.

1 it's just safer.
2 it's what they call radiant heat. It doesn't blow. It allows heat to come off evenly and holds heat after it shuts off.

Plus blowing direct heat onto your pots many cause issues as well at the root zone.

 

[curious618]

Ok. So at this point should I flush and readjust nutrients? Is it going to majorly effect her?

 

[Wizzlebiz]

Ok. So at this point should I flush and readjust nutrients? Is it going to majorly effect her?

Cut the grow big for now. Keep the other nutes going. Reduce the other big bloom and tiger bloom by 10% and go from there.

Once you begin to see that deep green going away reintroduce the grow big at a very low dose.

That's how I would fix that.

BTW I use ff trio exclusively for years. I know that shit well.

 

[Wizzlebiz]

Also be sure to water to runoff every single time that plant gets water or gets fed.

Without doing that you can get salts build up that can lockout a ton of nutrients.