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- #61
With the grow bags…..does water leak out the bag? Do I need to sit them in a tray?
First Time Indoor Grow - Need Your Help
- Thread starter Mindblank
- Start date
It's more about how many lux they're getting, or more technically the PPFD. This is a good set of guide-lines from Royal Queen Seeds:
How Much Light Do Your Cannabis Plants Require?
Roughly, the lux ranges below are best suited to their corresponding stage of the growing cycle:
• Clone and seedling stage: 5,000–7,000 lux
• Vegetative stage: 15,000–50,000 lux
• Flowering stage: 45,000–65,000 lux
Despite 65,000 representing the roof of recommended lux during the flowering stage, plants can handle up to 75,000 lux before things start to go south. With that said, illuminance values change a lot from one fixture to another; you should view these values as relative and not absolute.
Some growers approach cannabis with a “the more light, the better” mindset. This strategy only pays off until it reaches the 75,000 lux threshold. Light exposure of this magnitude can cause several issues. First, it can inflict light stress, which has the potential to reduce plant health and, subsequently, yield. This phenomenon manifests as dry, shrivelled leaves and bleaching. Second, this level of light intensity will drain your energy bill without actually doing much to increase plant productivity—you will reach a point of diminishing returns.
Water runs out of them (which is a plus) so it's best to put them on a wire rack (like for cooling baked goods out of the oven) in a tray. Airflow across the bottom makes for healthier roots.
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- #63
Day 28 under lights
Started nutes a week ago. Will probably nute every two weeks for now.
Re pot……..didn’t use the bags as I didn’t have time to find a tray or rack…..but definitely next grow.
Topped the two bigger ones.
Raise the light to maximum height and switch to 50% for vegetation
Will monitor them daily and begin LST
Temps still ok even with some of the 30° days we’ve had.
Started nutes a week ago. Will probably nute every two weeks for now.
Re pot……..didn’t use the bags as I didn’t have time to find a tray or rack…..but definitely next grow.
Topped the two bigger ones.
Raise the light to maximum height and switch to 50% for vegetation
Will monitor them daily and begin LST
Temps still ok even with some of the 30° days we’ve had.
Nice transplants!
I'd follow the manufacturer's recommendation.
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- #65
Yes the SeaSol bottle says every two weeks
it’s only 10ml per 10 litres of water
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- #66
Day 38 under lights
switched to vegetation
light is at 450mm above canopy as per manufacturer’s guidelines
light is around 70% dimmer
had it on 50% as per manufacturer’s instructions but couldn’t get decent lux values.
left side plant which was the weird looking one……growing small leaves……looking like a lettuce
middle plant has been topped and is also growing small leaves.
right side plant….the late comer…..is bent over and seems to be growing well
how am it doing?
anything I need to change?
switched to vegetation
light is at 450mm above canopy as per manufacturer’s guidelines
light is around 70% dimmer
had it on 50% as per manufacturer’s instructions but couldn’t get decent lux values.
left side plant which was the weird looking one……growing small leaves……looking like a lettuce
middle plant has been topped and is also growing small leaves.
right side plant….the late comer…..is bent over and seems to be growing well
how am it doing?
anything I need to change?
Porky82
Well-Known Member
Having ya lights so low is causing ya plants to be so compact! I use to run my lights low and the plants never got much taller than 60 to 70cm even with a long veg of 8 weeks! Here's a few pics of my lights hight! 1.8m from the ground! Plants are far larger and yield more! I run em at 100% all the time. Probably not the most economical way but give far bigger plants! Some strains are naturally short but not that short for 40 days old!
Plants were 9 weeks old when pic taken
Plants were 9 weeks old when pic taken
17" isn't bad for veg and the meter says you're running 31,200 lux which is fine for this stage. Sometimes you get the lettuce version of the variety so do what you can to train them and feel free to pull off the lower fans to spur growth up top. They'll probably stretch out fine in flower!
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- #69
Having ya lights so low is causing ya plants to be so compact! I use to run my lights low and the plants never got much taller than 60 to 70cm even with a long veg of 8 weeks! Here's a few pics of my lights hight! 1.8m from the ground! Plants are far larger and yield more! I run em at 100% all the time. Probably not the most economical way but give far bigger plants! Some strains are naturally short but not that short for 40 days old!
Plants were 9 weeks old when pic taken
Sure yours aren’t too thin and tall? Do you top yours?Having ya lights so low is causing ya plants to be so compact! I use to run my lights low and the plants never got much taller than 60 to 70cm even with a long veg of 8 weeks! Here's a few pics of my lights hight! 1.8m from the ground! Plants are far larger and yield more! I run em at 100% all the time. Probably not the most economical way but give far bigger plants! Some strains are naturally short but not that short for 40 days old!
Plants were 9 weeks old when pic taken
Porky82
Well-Known Member
Sorry for the bad advice. Carry on champ I'll see myself out!!
I was just offering up another way to look at his questions Porky. Not sure why you took that personally. As in many aspects of growing, there's not always one right answer.
Porky82
Well-Known Member
That wasn't meant for you mate.
The last thing in his post was "anything I need to change" I offered some advice to get plants taller than 15cm.
He clearly didn't like my advice so I apologised and left. Only came back to answer you mate!
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- #73
Sorry buddy…..I wasn’t saying anything like that.
but I can see how what I typed may sound harsh….
More of a question about yours being tall and thin.
was just asking if having the light higher is how you get them so tall, and if that gets good yield.
It makes sense the light being higher should cause them to stretch a little.
I’ve moved the light a little higher and turned dimmer up to maintain the same LUX
Personally I’d rather the light stay at the same high height….less stuffing around.
As far as dimmer %….. I’m not worried about power costs…..just looking to learn how to get good yield ever time.
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- #74
Pulled off some fan leaves and tying branches down to get some light to them
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- #75
Pulled off some fan leaves and tying branches down to get some light to them
Looks good. I'd do it on all three!
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- #77
That means the roots have made it to the bottom of the pot and that's a good thing! Those will air prune (the ends will dry out and die) which is fine, but as you see more and more it will eventually mean it's time to transplant.
the roots are more prone to growing out of the pot when there's runoff water to soak up.
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- #80
All three are coming along. Multiple stems due to the LST.
Temps aren’t too bad yet and humidity seems ok.
LUX is around 32,000
Temps aren’t too bad yet and humidity seems ok.
LUX is around 32,000
