24 hour light vs. 18/6.
- Thread starter Sencha
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ANC
Well-Known Member
Very few people have perfect climate control, so expecting them to offset anything is a shot in the dark.
If you require the most of your plants, you will use professional grade thermal and humidity sensors and automation.
The big guys don't accept anything over a fraction of a centigrade drift. Something like an ordinary airconditioner, has a very fuzzy thermostat/hygrostat, as it has to wait for the rest of the room/house to catch up with the temperature close to the appliance.
I am busy designing a 1 plant, 1 light grow tube, it is easier (less costly) to set up perfect conditions in a small space with less light waste than doing a tent or a room.
If you require the most of your plants, you will use professional grade thermal and humidity sensors and automation.
The big guys don't accept anything over a fraction of a centigrade drift. Something like an ordinary airconditioner, has a very fuzzy thermostat/hygrostat, as it has to wait for the rest of the room/house to catch up with the temperature close to the appliance.
I am busy designing a 1 plant, 1 light grow tube, it is easier (less costly) to set up perfect conditions in a small space with less light waste than doing a tent or a room.
since1991
Well-Known Member
Since I went sealed with a mini split..sante fe dehuey..Gavita doubles. I have way more control. I can set these appliances down to a 2 to 5 increment number in temp and rh. And its awesome how much control i actually have. Basically...I dont care the medium substrate (coco or wool) nor the fert/nute regimen. What determines my output with cultivars Iam playing with is plant numbers to canopy/net trellis management. Iam trying to hit 25 to 32 zips per Gavita 6/750. And doing it isnt easy despite claims. Consistently anyways. Per 4x4 I need only 6 to 9 with an easy peasy like Dream. She just gives it up with little effort. But something og kush like..I need easily double..and with multiple top training poking through the a double trellis.
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ANC
Well-Known Member
This, very much.
Even more important when doing a COB grow.
Our two grow beds equal only 24.6x4' but there are about 90 plants in there.
I want to cry when I see people display their COB grow rooms with 4' tall plants standing around with light being wasted. ours are nearly done flowering and they are about knee height.
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So, if I run a cool LED COB setup on low wattafge, does this affect my plants as well (24/0)? Should 24/0 be used for mother plant?
Another question, is it any good - I grow seedling now under one COB and I change lights intensity up to 6 times a day, whenever I pass by that box, I just play a little with that dimmer. Maybe it stresses plants out? I had a stunt grow at start but I thought it was because of too wet soil/coco tablets and too much nutes added to soil.
stiffnuts12
Well-Known Member
So ive been on the 24/0 light schedule for a month now. Can i switch to 18/6 with no issues right now?
Galwaith
Member
I like 24 for the first couple weeks, then I will notice that the plants just don't seem as vigorous, almost "tired", they will get this look of dehydration even though you water them. Then I will switch to 18 and 6 and the next day the leaves are all happy and standing up and seem well rested. Then from there about 2 weeks til they start putting out pre-mie flowers, once they do, into flowering.
AllThingsGreen
Member
What’s the best book for inexperienced gardeners to start with ?
Serverchris
Well-Known Member
mr. childs
Well-Known Member
Kushash
Well-Known Member
The person you are asking hasn't been around since 2016.
Here are two popular cannabis grow books if this is what you are looking for.
Marijuana Horticulture: The Indoor/Outdoor Medical Grower's Bible
or
Marijuana Grower's Handbook by Ed Rosenthal
mr. childs
Well-Known Member
mismos00
Well-Known Member
Many living things don't sleep or take a down period, including mammals. Some animals rest half their brains while the other is awake. Some living things rest/sleep during the day, or both! I've heard of guys like this that want to simulate the moon cycles in their grow rooms and make sure the constellations are facing the right pole. Nature isn't as simple and fragile as that.Got to put the plants to bed , if i dont they get out of their pots and run around the fucking room .
Budzbuddha
Well-Known Member
I don’t follow moons or Uranus....
Plants have a circadian rhythm as do other forms of life. They take the energy gathered from their day absorbing light to power photosynthesis. So when the night comes , the plants METABOLIZE and grow.
So , I guess in the world we live in , with day and night .... So plants don’t do this in outdoor settings according to you .... the whole idea of an INDOOR GROW is to “ simulate and or recreate “ the plants “ natural “ environment that it is hard wired to grow in.
Plants have a circadian rhythm as do other forms of life. They take the energy gathered from their day absorbing light to power photosynthesis. So when the night comes , the plants METABOLIZE and grow.
So , I guess in the world we live in , with day and night .... So plants don’t do this in outdoor settings according to you .... the whole idea of an INDOOR GROW is to “ simulate and or recreate “ the plants “ natural “ environment that it is hard wired to grow in.
Of course you can but your plants won't benefit from it. If you are using your light to heat, then cover your plants.
Here's the science
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1075536/
Cannabis is a C3 plant, to over simplify, they inhale in the light and exhale in the dark. So they need some time out of the light.
I read on many source that Plant will be stronger and bigger with 24:0 so that is not true...