Aqua Man
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But there is a difference in the light produced... by a fixture at the same wattage... and that can be a huge difference. We see this all the time where an HID will burn the leaves before bleaching because of the heat production.. where as an LED giving to many photons will bleach a plant because it can't keep up with photosynthetic ratesSure I don’t grow like a commercial grower at all either. We grow for our needs likes and space and environment. I am specifically talking about medium to large fully packed rooms. And old school commercial set up and grow style.
And yeah they max the light out for sure. I have seen top hat reflectors almost touching all across the canopy. Led or hid there is no room for more light.
I'm missing what your saying somehow... watts don't equal yield, not even close. Photons equal yield. If that were the case HID would absolutely murder LED.
By cram as much light as possible I'm not sure what you mean? Enough to indice photorespiration? Photosaturation?
And I absolutely agree with you a commercial grower could care less in most cases.
Photosaturation, photorespiration and light stress are all real factors we can't deny. I don't disagree that a 2 hr dark period may be enough hell maybe an hr for all I know. What I'm getting at is not that it can't be done but that there are benefits to a dark period and many many growers report no significant difference in some reduction of photoperiod. I would explain that by saying the light intensity and the duration will equal the DLI (amount of photons delivered) needed to maximize growth.
So we can provide a more intense light for a shorter duration as long as photorespiration is not occurring and reducing the plants efficiency to convert it to energy
No the less heat per watt is because it produces more photons per watt... therefore less energy is wasted producing heat. The more efficient a light uses a watt the less heat it produces as a byproduct.
I'm not saying they need it... just that under certain lighting they may and I feel its beneficial for more reasons... again not saying anything is needed.I did not see the negatives you keep bringing up. When the plants get “tired” they simply lower their leaves to reduce their footprint for a while then perk up and go again.
And Bruce said they don’t need a dark period I that video I am sure.
Ok so what is par maxed out? I mean 2000ffd? 24 hrs straight.... absolutely not.when you cover the room in light with a par meter to achieve consistency and no low spots it doesn’t matter what type of light you use. The par is maxed out for growing purposes. More than the plants need is their plan.
So switching from day de hps 1000’s to 680 watt boards would only change the amount of power and heat produced. Not the amount of light. Again. The space is fully max lit regardless of tech.
You are thinking like a hobby grower. (Overthinking lol) one lamp thinking.
Plants outside in high light areas get more light than we can reproduce.
Wrong that 680w may produce more photons... than 1000w HID. It all depends on efficiency. Umol/watt directly correlates to the heat produced. Heat is a byproduct of efficacy.. its not a desired effect. Say you produce 3umol per watt the rest of the watt will be turned into heat.when you cover the room in light with a par meter to achieve consistency and no low spots it doesn’t matter what type of light you use. The par is maxed out for growing purposes. More than the plants need is their plan.
So switching from day de hps 1000’s to 680 watt boards would only change the amount of power and heat produced. Not the amount of light. Again. The space is fully max lit regardless of tech.
You are thinking like a hobby grower. (Overthinking lol) one lamp thinking.
Plants outside in high light areas get more light than we can reproduce.
Ok so what is par maxed out? I mean 2000ffd? 24 hrs straight.... absolutely not.
Wrong that 680w may produce more photons... than 1000w HID. It all depends on efficiency. Umol/watt directly correlates to the heat produced. Heat is a byproduct of efficacy.. its not a desired effect. Say you produce 3umol per watt the rest of the watt will be turned into heat.
So an LED at 3umol per watt vs a HPS at say 1.2umol per watt means the HID will produce a lot more heat and a lot less light (photons) at the same wattage
Depends on the height.I don’t know. We can check what gavita does as a baseline. But I am sure a room full of 1000 watt hid would reach 1500 no?
This is an important distinction. I use much weaker lights for the 24 hour ladies than I do for the vegging or flowering ones. They can get fried from constant intense light.Ok so what is par maxed out? I mean 2000ffd? 24 hrs straight.... absolutely not.
I would assume that would just confuse and stress it out and possibly cause it to go hermie?What about a polyphasic dark schedule, like Da Vinci... 20 mins every 4 hours or so it’s said.
I’m sure it’s been tested but I haven’t read much about it. Just jumping in, if the plant rests when overloaded does it respond to a few short spaced out dark periods rather than only one long one? Or does that scramble the plant with too much jet-lag?
All sorts of that has been tried out... there is soooo much more to this discussion like the time it takes a plant to change processes... hell light spectrum has a large impact and evidence to show a shift in red to far red can help speed that up... possibly making it viable... to my knowledge it's not as beneficial but I could be wrong and that's simply due to the time it takes to get the plant switched processes. So many factors that affect this it makes my head spinWhat about a polyphasic dark schedule, like Da Vinci... 20 mins every 4 hours or so it’s said.
I’m sure it’s been tested but I haven’t read much about it. Just jumping in, if the plant rests when overloaded does it respond to a few short spaced out dark periods rather than only one long one? Or does that scramble the plant with too much jet-lag?
But it does if you are lacking intensity... like I said there is a net gain to a point and all processesare haplening.... even if photosynthesis is reduced by 25% at high light its still net photosynthesis.. but photosaturation is a whole nother ball game.I think I'll believe the lady with a doctorate that just said the plants need a dark period for the microbiome to function properly and for the soil (assuming you're in soil) to be healthy. All living things need to rest to regenerate, that's just fact. She just said it will make the plant stressed and more susceptible to pests and disease, and that it could possibly lower the quality of the weed... so unless you're a commercial grow that only cares for rate of output... even then it makes no sense to me to do the 24 cycle.
I'm sure they can, but not so sure they should... I just feel every living thingneeds restBut it does if you are lacking intensity... like I said there is a net gain to a point and all processesare haplening.... even if photosynthesis is reduced by 25% at high light its still net photosynthesis.. but photosaturation is a whole nother ball game.
Under low light the plants can easily keep up to 24/0
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