Hps vs New L.E.D.s

Yodaweed

Well-Known Member
good led lights emit pure wavelengths of light without the waste in uv and unused wavelengths of hids, they don't have to muscle out a ton of shit thats of no use to the plant, to get the part that is of use. thats why with good leds, like cree and citi, you get more effect for the wattage put into it.
a 600 watt cobb will produce as much heat as a 600 watt hid, but it will produce a lot purer, more usable light for that heat
UV isn't wasted, it increases tric production up to 20% , UV-B in particular works the best and MANY LED users are implementing a UV supplement. That's the main reason gavita suggests plasma supplementation, those suckers produce a ton of UV.
 

jimihendrix1

Well-Known Member
I dont think anything penetrates like a 1000 watt Gavita on full blast.

I ALWAYS use fans regardless.

I grow Large Plants, in Large 20 Gallon Containers with Promix BX. With 3 1000 watt Hortilux Super Bulbs I can do 6 x 20 Gallon Containers, and 5 x 5 Gallon containers and can get anywhere from 65-96oz. Depending on the strain I'm using.

The Fans allow constant Wind which acts as a stressor, and makes the Stems/Stalks Stronger. I also Bend, and Shake my plants to increase strength. Some plants are too stiff to bend though. Fans for me are critical. And not just for ducting.. Of which I don't do, as I have a large area, and in all but the hottest conditions, I don't have to worry about heat or Ventilation. I also have great ventilation, and feel fresh air is vital, and with enough fresh air exchange, you can also get away with hotter temperatures before it mucks with growth.

I also feel CO2 is Useless unless you have 100% Air Tight Chamber. I prefer constant fresh air exchange.

Also I'm not saying LED cant grow Fantastic Weed. It Can, and I think the lights will get better and better.

Ive smoked Great Weed with regular T8s 40 years ago.
 

Olive Drab Green

Well-Known Member
Heat is Heat.

600 watt LED is as hot as a 600 HID, and is harder to cool.
How the fuck do you figure that? You've clearly have never used COBs before. HIDs are way hotter than solid state lighting, and solid state is way easier to keep cool. My 89w Tasty Cree CXB3590 3500k puts out the PPFD of a 400-600w HID in a smaller 2x2 are. I use two to get my entire closet for less than 200w.
 

Roger A. Shrubber

Well-Known Member
UV isn't wasted, it increases tric production up to 20% , UV-B in particular works the best and MANY LED users are implementing a UV supplement. That's the main reason gavita suggests plasma supplementation, those suckers produce a ton of UV.
i'm sorry, meant IR, not uv, i actually run a couple of reptile lights myself 8)
 

Olive Drab Green

Well-Known Member
1000w of HPS = 1000w of COB = 1000w of a heater , all watts convert to BTU at the same rate.

http://www.convertunits.com/from/Btu+per+hour/to/watt
No it isn't. At all. Plants don't read watts, they read PAR plus UV and IR. And like I said, solid state is no where near as hot as HID. HID wastes watts in unusable wavelengths, mostly converted into heat. I actually have to add a heater in my room because it gets too cold.
 

Yodaweed

Well-Known Member
No it isn't. At all. Plants don't read watts, they read PAR plus UV and IR. And like I said, solid state is no where near as hot as HID. I actually have to add a heater in my room because it gets too cold.
PAR has nothing at all to do with heat, 1000w of any energy source is the same as 1000w of another, you need to read up on physics. Read about the first law of thermodynamics and the law of conservation of energy.
 

Olive Drab Green

Well-Known Member
HID is a high intensity incandescent. You're ridiculous if you think solid state is anywhere near as hot. I can put my finger within half an inch or less of my COBs and it feels warm at most. Solid state puts out very little heat, especially in comparison with HID.
 

Yodaweed

Well-Known Member
HID is a high intensity incandescent. You're ridiculous of you think solid state is anywhere neat as hot. I can put my finger within half an inch of my COBs and it feels warm at most.
You are down right stupid, touch has nothing to do with ambient heat and thermodynamics, please read up before you speak anymore. Furthermore HID stands for High Intensity Discharge....
 

Yodaweed

Well-Known Member
Are you retarded? Where do you think the ambient heat comes from? Use a COB, then you can speak all the bullshit you want.
I been using COBs longer than you been growing , please read up before you speak you just make yourself look uneducated and ignorant.
 

Yodaweed

Well-Known Member
You are literally saying that "ambient heat" isn't palpable, that it has nothing to do with touch. You are literally making zero sense.
Bro do you know anything about the laws of thermodynamics or are you once again talking about shit that is above you? Pains me to do this but you seem to have worked your way on to my ignore list now, thought we could get along but you are so uneducated and ignorant it isn't worth me even being bothered to explain more to you, go read up about Newtonian physics and the laws of thermodynamics or take a college course I think you got a lot to learn.
 

Olive Drab Green

Well-Known Member
I know I don't need a cool tube for 1000w of COB. I also know that if I can put my finger that close to the source of light and supposed heat, that any other point at a distance from the point of origin will not be as hot. You are wrong about 1000w of COBs running anywhere near as hot as HIDs.

And to hell with your ignore list, put me there.
 
Last edited:
Guys I really appreciate all this knowledge and different points of view but I am looking for factual info on decreases of heat and electricity bill. I am running a 600 hps,,,,so I would replace with comparable LEDs? My questions are really wanting to know plant production, heating temp differences and money saved at the power bill. Anybody switched from a 600 hps have this info?
 

jimihendrix1

Well-Known Member
IMHO to come close to =ing your 600 watt HID you will need something like

KIND K5 1000 Watt LED Grow Light


G8LED 900 Watt MEGA LED Grow Light with Optimal 8-Band plus Infrared (IR) and Ultraviolet (UV) - 3 Watt Chips - All in One for Veg and Flower
 

maxamus1

Well-Known Member
Guys I really appreciate all this knowledge and different points of view but I am looking for factual info on decreases of heat and electricity bill. I am running a 600 hps,,,,so I would replace with comparable LEDs? My questions are really wanting to know plant production, heating temp differences and money saved at the power bill. Anybody switched from a 600 hps have this info?
Unfortunately on here about this subject there is a lot of opinions with little help for those like us. I use a 400 w mh/hps and plan on switching over to LEDs asap. As far as I can tell the full spectrum whites are the way to go if you watch any utube check out growmau5 or greengenes channel they have a lot of info on leds, They are also on here or they were so maybe if you message them they might be able to help you out. Best of luck on your search.
 

Roger A. Shrubber

Well-Known Member
Guys I really appreciate all this knowledge and different points of view but I am looking for factual info on decreases of heat and electricity bill. I am running a 600 hps,,,,so I would replace with comparable LEDs? My questions are really wanting to know plant production, heating temp differences and money saved at the power bill. Anybody switched from a 600 hps have this info?
heres the thing. if you have a 600 watt hps and replace it with an actual 600 watt led, it would be practically identical heat and energy use wise. the advantage is that you don't need a 600 watt led to replace a 600 watt hps, a good led with the right spectrum that actually uses 300 watts will be just as effective as a 600 watt hps. so it uses half the electricity and produces half the heat, while producing only the wavelengths of light that you want.
 

Banana444

Well-Known Member
PAR has nothing at all to do with heat, 1000w of any energy source is the same as 1000w of another, you need to read up on physics. Read about the first law of thermodynamics and the law of conservation of energy.
Your just plain wrong. Depending on what you put that 1000w into, will dictate what is produced. Saying 1000w put into any light source will create the same heat is wrong. I have a tad over 600w of leds in a 4x4, temps are 5 degrees above ambient temp and is 77, if i take all that down and put a 400w mh in there, it would be right about 85degrees. Why? Because hid is far less efficient at turning electricity into light and creates far more heat.
 
Top