Slow seedling vegetative growth

DabberDan

DabberDan

Member
I've been working on! First returning grow in a while and I've noticed my seedlings are growing at a really slow rate. I've been comparing side to side with the BUDS 4 less book and my plants seem to be lagging behind. My Chaos kush(21 days) only has 3 nodes, all extremely close together and totalling only about 4 inches tall. My Blueberry(12 days) seems to be showing slow growth too but not as bad. My room is running 5 40watt 2100k bulbs about 4 - 6 inches from each plant with the temp at 75 and humidity at 50% - 58%. I'm feeding every other day or every third day depending on the plants needs. They're in 5 gallon buckets with a 6 in. Fan blowing directly in the bulbs and tops of plants. Is there something fundamentally wrong I'm committing? Here's some pics. The bigger is the chaos kush
 

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CashCrops

CashCrops

Well-Known Member
Pulling air out of the grow room? and feeding shouldn't start until flowering. They should get all they need from the soil for now. Feeding will not speed it up unless your in some type of hydro where nutes are needed
 
DabberDan

DabberDan

Member
CashCrops said:
Pulling air out of the grow room? and feeding shouldn't start until flowering. They should get all they need from the soil for now. Feeding will not speed it up unless your in some type of hydro where nutes are needed
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I'm doing an organic grow so I do rely on the soil majorly lol the only feeding i do is a natural kelp/alfalfa feed to boost microbes in the soil; that of which I've never used on the blueberry. Not pulling air out of it yet but I'm using a closet space about 5' x 5' x 2' and I leave the door open all day to swap in and out air from the room. I do have a carbon filter that I plant on getting some ducting and an inline fan for pull air out through the top but as it is it seems to have fresh air. Will an exhaust fan really improve it much?
 
CashCrops

CashCrops

Well-Known Member
Well, it's best to remove the air from it and bring fresh in. This helps dry out the medium (Soil) causing the roots to search for moisture. The faster this happens the faster they grow. Adding per-lite to the soil helps with this for draining purposes
 
DabberDan

DabberDan

Member
CashCrops said:
Well, it's best to remove the air from it and bring fresh in. This helps dry out the medium (Soil) causing the roots to search for moisture. The faster this happens the faster they grow. Adding per-lite to the soil helps with this for draining purposes
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I added a good amount of per-lite to my mix but I'll get on that inline fan as soon as possible!
 
CashCrops

CashCrops

Well-Known Member
The roots, all plants roots love CO2. Yes in budding 800 to 1200ppm of CO2 when the lights are on as long as you have proper ventilation or cooling.
 
DabberDan

DabberDan

Member
CashCrops said:
The roots, all plants roots love CO2. Yes in budding 800 to 1200ppm of CO2 when the lights are on as long as you have proper ventilation or cooling.
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I read in some random grow thread somewhere that you can substitute a feed of normal h2o with carbonated water to give co2 to your roots and it loosens up the soul to an extent. Ever heard of such a thing being done before?

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CashCrops

CashCrops

Well-Known Member
DabberDan said:
I read in some random grow thread somewhere that you can substitute a feed of normal h2o with carbonated water to give co2 to your roots and it loosens up the soul to an extent. Ever heard of such a thing being done before?

Sent from my SCH-I545 using Rollitup mobile app
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Nope, It'll just fizzle away. Tried a long time ago. Did a side by side comparison with an OG kush batch and there was no difference. It's why hydro grows are ten times faster, stronger and bigger. The roots get an unreal amount of CO2 which is important to the overall plant health. Also soil is more of a nutrient blocker where as you feed the soil, then the plant gets it nutrients from it. In hydro, you feed the plant directly.
 
tstick

tstick

Well-Known Member
DabberDan said:
I've been working on! First returning grow in a while and I've noticed my seedlings are growing at a really slow rate. I've been comparing side to side with the BUDS 4 less book and my plants seem to be lagging behind. My Chaos kush(21 days) only has 3 nodes, all extremely close together and totalling only about 4 inches tall. My Blueberry(12 days) seems to be showing slow growth too but not as bad. My room is running 5 40watt 2100k bulbs about 4 - 6 inches from each plant with the temp at 75 and humidity at 50% - 58%. I'm feeding every other day or every third day depending on the plants needs. They're in 5 gallon buckets with a 6 in. Fan blowing directly in the bulbs and tops of plants. Is there something fundamentally wrong I'm committing? Here's some pics. The bigger is the chaos kush
Click to expand...
Yep. You are overwatering,

Your mix looks like it has a lot of bark in it. In my experience, whenever potting soil looks like that, it's acidic.

Not everyone will agree with me, but I think you should get some better soil and then transplant the seedlings into a 1 gallon garden container (the black plastic kind with the big square drainage holes). When the plant grows and the roots fill that container, then transplant to a 3 gallon container…and then to a 5. That's what works well for me. That's my 2 cents.

And add a lot of air movement -gotta have a fan!

And I like to weigh the dry soil and container to determine when to water. In other words when the soil returns to its dry weight, then it's time to water again…and not before!
 
DabberDan

DabberDan

Member
tstick said:
Yep. You are overwatering,

Your mix looks like it has a lot of bark in it. In my experience, whenever potting soil looks like that, it's acidic.

Not everyone will agree with me, but I think you should get some better soil and then transplant the seedlings into a 1 gallon garden container (the black plastic kind with the big square drainage holes). When the plant grows and the roots fill that container, then transplant to a 3 gallon container…and then to a 5. That's what works well for me. That's my 2 cents.

And add a lot of air movement -gotta have a fan!

And I like to weigh the dry soil and container to determine when to water. In other words when the soil returns to its dry weight, then it's time to water again…and not before!
Click to expand...
The mix has a 3 inch layer of mulch on top which is more barky but the soil is mostly a soft light black mulch. I think more ventilation is the next best step. I like the idea of weighing before and after being dry.
 
reddan1981

reddan1981

Well-Known Member
[/QUOTE]
thankyou for the PDF. These tests are using atmospheric increase in C02. Probably not one for discussion on this ops thread, but I still have yet to read conclusive proof, coincidentally I've seen these same pdfs used numerous times. All evidence always references to these Russian potato and maize papers, I will add I haven't looked that hard into it, I assumed photosynthesis was needed for processing C02 into a usable form lol
 
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