Bongsmoke420
Well-Known Member
I’m keepin a pretty cool tent 22 degrees is average look what colour it turned my pineapple chunk 
QB324 grow
- Thread starter Prawn Connery
- Start date
seed souce ?
Bongsmoke420
Well-Known Member
Dark horse genetics, my friend bought them and gave me a few they were some of the first seeds I ever got, these days I only get seeds from breeders or banks... since I’m in aus i try and find other people in oz so it’s a lot easier to get them by post
Prawn Connery
Well-Known Member
Nice buds, mate! Yeah, the overnight temps have turned some of my plants blue, too.
Yodaweed
Well-Known Member
Get a fan to blow around the air in your room, i have two wall mounts for my area. Air movement is key to any grow including LED. Heat is based on how many watts you use not the type of light you use. HID lights don't throw out any more heat than an LED they only disperse the heat differently.
Buck5050
Well-Known Member
Very nice work as usual @Prawn Connery . Where's that snazzleberry?
Prawn Connery
Well-Known Member
How did you come to that conclusion? I'm genuinely curious.
Yodaweed
Well-Known Member
it's a scientific fact, 1000w of any source is the same as another, if you don't understand i'd suggest looking into this thread for a better understanding
https://www.rollitup.org/t/heat-from-1200w-of-1212s-vero-29s-cxm-22-cxb3590-compared-to-2x-600w.936071/
Here's some quotes from it
Prawn Connery
Well-Known Member
Ah, so if I put a 1200w kettle in my grow room, I could use that to grow plants instead of 2x600W HPS lamps - is that correct?
1200W will always be 1200W, after all . . .
I never knew photosynthesis was a product of conductive or convective energy - I always thought it was a product of electromagnetic energy
Silly me.
1200W will always be 1200W, after all . . .
I never knew photosynthesis was a product of conductive or convective energy - I always thought it was a product of electromagnetic energy
Silly me.
welight
Well-Known Member
1000 watts is a 1000 watts no matter what part of the planet you live on but where is the 1000 watts located is more the issue, relative to the plant, all out front creates issues leaf to light distance, no doubt the ability to spread 1000 watts around your room with LED is one of its key features. Watts is really a cost issue cos plants dont know what watts is any more than they know what lumens are, but they know about photons, looking clutch prawn, gots ta luv the Nichia
cheers
Mark
cheers
Mark
Prawn Connery
Well-Known Member
A Watt is simply a measure of molecular energy. That energy can be used for work (force), or it can be passed on to other molecules in the form of thermal energy (heat). Thermal energy can be conductive (molecule to molecule), convective (circulation of molecules), or radiant (electromagnetic). Electromagnetic energy is the form of energy (otherwise known as light) that plants use to photosynthesise. If an element emits a high amount of electromagnetic energy for each watt converted (emissivity), then it will emit less conductive or convective energy.
First law of Thermodynamics: energy can neither be created, nor destroyed. And it is either latent or kinetic.
Petrol/gasoline has latent energy: that latent energy can be converted to kinetic energy in the form of a piston engine producing work. That same piston engine also produces heat. The more energy is converted to work, the less energy is converted to heat (frictional and thermodynamic losses etc). An engine is therefore measured as being more or less efficient by the amount of work compared to heat it produces for a given amount of energy consumed.
My learned friend above (Yodaweed) has forgotten that some lighting elements are more efficient at emitting electromagnetic energy than others. That electromagnetic energy can be used to create work - fuel an organic reaction, ie; grow a plant - but it can also be converted from kinetic energy to latent energy, in the form of stored sugars and starches inside the plant that can later be converted back to kinetic energy that can be used for further growth.
So there are two issues at stake: firstly, the more efficient an element is at emitting electromagnetic energy, the less total energy (watts) is needed to produce the same amount of work in a plant. Where less total energy is needed for the same process, less potential thermal energy (heat) is released.
The second issue is that some forms of heat (thermal energy) can be better converted from kinetic to latent energy than others. The more of that energy that can be stored by the plant (by converting electromagnetic energy), the less energy remains in the surrounding environment in the form of conductive and convective energy (heat).
None of this, of course, is leveled at you Mark - you already get it. It's merely meant to point out to Yodaweed that a little bit of knowledge can be a dangerous thing . . .
First law of Thermodynamics: energy can neither be created, nor destroyed. And it is either latent or kinetic.
Petrol/gasoline has latent energy: that latent energy can be converted to kinetic energy in the form of a piston engine producing work. That same piston engine also produces heat. The more energy is converted to work, the less energy is converted to heat (frictional and thermodynamic losses etc). An engine is therefore measured as being more or less efficient by the amount of work compared to heat it produces for a given amount of energy consumed.
My learned friend above (Yodaweed) has forgotten that some lighting elements are more efficient at emitting electromagnetic energy than others. That electromagnetic energy can be used to create work - fuel an organic reaction, ie; grow a plant - but it can also be converted from kinetic energy to latent energy, in the form of stored sugars and starches inside the plant that can later be converted back to kinetic energy that can be used for further growth.
So there are two issues at stake: firstly, the more efficient an element is at emitting electromagnetic energy, the less total energy (watts) is needed to produce the same amount of work in a plant. Where less total energy is needed for the same process, less potential thermal energy (heat) is released.
The second issue is that some forms of heat (thermal energy) can be better converted from kinetic to latent energy than others. The more of that energy that can be stored by the plant (by converting electromagnetic energy), the less energy remains in the surrounding environment in the form of conductive and convective energy (heat).
None of this, of course, is leveled at you Mark - you already get it. It's merely meant to point out to Yodaweed that a little bit of knowledge can be a dangerous thing . . .
pop22
Well-Known Member
I find two faults with your logic. First, is that you assume our pet troll will read this, second, that it is actually capable of reading comprehension.
And we really shouldn't feed the trolls, that's like feeding a stray cat........... it will just keeping hanging around.......
And we really shouldn't feed the trolls, that's like feeding a stray cat........... it will just keeping hanging around.......
Humple
Well-Known Member
Yodaweed will cling to his fantasy till the bitter end. Science refutes his willfull ignorance, but the force of confirmation bias is strong with him.
CoB_nUt
Well-Known Member
Been lurking your grow and build @Prawn Connery, nicely done!
I see you mentioned the Meanwell 480 driver. Question, is that a matter of preference for you? Reason I ask is because I'm planning a 4x4' tent QB build and on HLG's website they have the 320 listed with the kit. Also, do you think 2 of these kits(4 Qb324's) will suffice in said space? I was looking at strip builds,but i'll save that for my 2x4' that is going to replace my 4x4 veg tent thats going to be a flower tent now.
Prawn Connery
Well-Known Member
Yeah, but it's a "scientific fact" that all energy is the same! I think
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Prawn Connery
Well-Known Member
I chose the 480s to give us a little bit of head room if we decide to actively cool the boards. I also designed the frames to be able to mount a couple of computer fans upright in line with the cooling fins if we decide to go that route. The room is also air-conditioned (you can see the aircon mounted directly above the LED frames), which also helps. The boards are max rated at 250W each with active cooling.
Personally, though, I think a HLG-320H-C1400 is enough and should be able to run two boards in series at about 350W or slightly more (175-180W per board). Two of those (2x 320 drivers and 4x QB324s) would be plenty to flower in a 4x4. I run the equivalent of 2xQB288s (24x 2' H series strips) with 2x HLG-240H-48 drivers in my 4'x2' dialled down to 200W each for a total of 400W. That's plenty.
Prawn Connery
Well-Known Member
This is my personal grow. It's an older photo but gives you an idea of what I'm talking about in my 4x2. Each of those frames is connected to a HLG-240.
Prawn Connery
Well-Known Member
It's not in that room, it's in my personal grow at home. I've got two that are just about finished. I'll try to post some pix at some point.
CoB_nUt
Well-Known Member
Thank you for the response. With so many QB combos out it's hard for me to decide which combo to go with. Just yesterday on amazon I saw a 4 pack of qb120's and thought to myself,"I could buy 8-12 of these and it'll work." Then I reminded myself of your thread and went hmmm..
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