depends in the t5. Hydrofarms put out less heat than quantum badboys. My 3 inda gros together put out less heat than 2 badboys. The vertical vpar puts out more heat than the overhead 420's.My aquarium T5s in my clone cab still get pretty warm. How is heat with two 8 bulb t5s?
Maybe you should find waldo and ask for a physics lesson
..........the same 420 watt induction bulb, in a different open fixture orientation will NOT be cooler than the other.
based on where the ballast is placed and open ended reflector. The heat displacement is different. Than the overheads.. The reflector does not direct the heat any specific direction. With the pontoons on the vpar there are no 730"leds. But twice as many 660 leds. Since leds are on both sides of the light. More led's more heat. Hnmmmm logicMaybe you should find waldo and ask for a physics lesson
i have a question about this post that i'm not quite picking up what you're putting down.. i understand that you're saying that leds are more effecient, they put out more lumens per watt then say an hid, but that doesn't change the wattage they draw, no? it just means that they make better use of what they use..
I was referring to electrical efficiency. What they are capable of being driven and what they are actually driven. How much light per watt is actuallly being put out. After all that spectrum comes into play. How plants absorb more regions than others. 100 watts is not 100 watts. At home depot a 18w Cree led puts out the same amount of light as 100w incandescent.
The way I see it, you can get the same results by using less watts of LED. This makes less heat and lower bills. But as we are discussing the fact that all watts are not created equal, don't forget that not all watts of LED are equal either. Lights like the Area51s' are even more efficient than the generic ones.
ok, i get what you're saying, but still, to say 100 watts isn't 100 watts is misleading.. all the watts refers to is how much electricity is being drawn by each lamp, not what the lamp is doing with it in the form of creating light.. so techinically, yeah, 100 watts of led is still going to draw the same 100 watts of electricity that an hid bulb will draw, or even an 100 watt toaster.. all the watts are is a draw of current..
Yep, you got it. This guy got the same results with 280w of LED as he did with his 400w HID, and I bet his room was a lot cooler.
Ding ding ding! Someone by him a race car.. ...a watt is a watt......if they all draw the same wattage they all put out the SAME heat.some techs will have much greater efficiency in converting energy into "light"....like hps vs incandescent.
i have read this thread like 3 separate times, and i wasn't going to say anything as i wasn't sure if i was understanding what he meant by all watts aren't the same, but idk, i decided i'd ask for a bit of clarification..Ding ding ding! Someone by him a race car.. ...a watt is a watt......if they all draw the same wattage they all put out the SAME heat.some techs will have much greater efficiency in converting energy into "light"....like hps vs incandescent.
We keep having the same discussion every month
OK I'll take a stab at this. Yes a watt is a watt at the wall but because of the difference in efficiency and spectrum,LED delivers more light energy per watt to the plant than HPS. If you had a quality spectrum LED that was twice as efficient than HPS it would not have twice the grow power of the HPS because of the wider spectrum but with a full spectrum comes a higher quality than HPS. I think 600 watts of quality spectrum and efficient LED will yield close to the same as 1000 watt of HPS but the LED will produce higher quality. There is a grow going on now with this comparison if you want to follow it.
yeah, i understand that point captain morgan.. you get more lumens, or par, or or foot candle, or w/e term one might want to use for an amount of light from a source, vs say an hid bulb..
someone ^^^^ should be wearing a dunce cap. We have been over this. Yes a watt is a watt. Not all watts are created the same. More efficient watts equals less heat. An inda Gro 420 at 420 watts puts out quite a bit less heat than a 400w hps. A 330w CMH is about the same heat output as a 250w hps. An 860w CMH heat out put is the same as asDing ding ding! Someone by him a race car.. ...a watt is a watt......if they all draw the same wattage they all put out the SAME heat.some techs will have much greater efficiency in converting energy into "light"....like hps vs incandescent.
We keep having the same discussion every month
all watts are created equal.. say for instance, a watt was a 16 oz glass of water.. it's just a measurement of electricity, nothing more, nothing less.. now, it's not the watts that are different, as a watt is always going to be a 16 oz of water, it's what ever you plug into it and is using the watts that is different.. the watts will always be the same..
Yep a watt is a watt,which is not a good term along with lumens to use when comparing lights . You should look at Par or a measurement like umoles to measure the energy getting to the plant but you also have to compare the spectrum's.
yeah, lumens is another bad term as all lumens are is a measurement of the color emitted by a light source to the human eye, and we all know plants aren't humans, lol..
.........lol
Yea,watts is only good for measuring your operating costs. Watts and lumens are the only terms regular people know so they push those terms even tho they don't really tell the story about the light. You can usually tell the good from the bad sellers by the info they give you,if all they push is watts and lumens look out. A reputably seller or manufacturer should also give you par or umoles readings and a spectral graph and at least the brands of the parts they are using.
