SmokeyMcChokey
Well-Known Member
Fair enough. I'd be lying to you if I said I wasn't wrong about electrical engineering and physics from time to time. You damned pot growing hippies are a wealth of knowledge whether it's well documented or not.
400w HID or 400w Mars Hydro II
- Thread starter 570Grow
- Start date
Dynamo626
Well-Known Member
back to the subject at hand
Fair enough. I'd be lying to you if I said I wasn't wrong about electrical engineering and physics from time to time. You damned pot growing hippies are a wealth of knowledge whether it's well documented or not.
SmokeyMcChokey
Well-Known Member
I vote go 315cmh they have some cheap amazon kits that'll get you through your first run then you can upgrade the lamp
570Grow
Member
Well maybe you can help me understand leds a little better.
For some reason even though I met all of the criteria, I can’t post links to stuff so if you want look up morsen max 1500w cob.
From what I read these are 300w in each chip, but pulls 235. So would my plants be receiving only 235w of light? This is where Ive been getting confused for the passed two years and for some reason can’t get passed it. Kinda pointless I’d think if you have a “1500w” light that’s really only giving 235, so I’m sure there’s something I’m missing
Lordhooha
Well-Known Member
That thing isn’t even close to a cob light. It’s a glorified burple light. Look at timbers, or here and look at the hlg lights they’re quantum boards and would be much better.
https://growerslights.com/collections/led-grow-lights
iPerculate
Well-Known Member
This is not true. As stated before, LED's are much more efficient in the amount of light to heat produced from the same wattage. The main reason for the recent push the LED is this efficiency to produce so much more light with less power(watts). LED's are rated theoretically of what the diodes can handle and are never run at this rated wattage. But we can still compare the true wattage, and with 600w of true LED you would get far more light and less heat than with 600w HID.
LED also has cooling fans/heat sinks built in that further enhance the heat issue, allowing you to get them much closer to the plants. You cannot get a 1000w HID the same distance as 1000w actual wattage LED. There are also benefits to the spectrum produced, so that more light can be used by the plant.
I have heard poor things about the Mars lights
570Grow
Member
Yea if that’s the price of a good led setup I think hid is more my thing lmao
Lordhooha
Well-Known Member
Those aren’t actually bad get two of the 135’s I just bought two of the 600h setups which are 750ish a piece. With hid you have the heat to worry with
SmokeyMcChokey
Well-Known Member
I'll refer to previous post about etcp etc etc
SmokeyMcChokey
Well-Known Member
The numbers they are giving you are arbitrary. If it only pulls 235 from the wall it's not a 1500 anything. That's literally just a BS number they throw on there to fool a stoner into thinking "sweet light man" and sometimes it works so they keep doing it
drsaltzman
Well-Known Member
I'm no lighting expert like yourself, though I have worked many shows with Vari-Lite, LSD and Nocturne techs back in the day.
But I can say this: when I put my hand under a 300W COB it is nowhere near as hot as a 250W HPS. Not even close.
I don't understand your position.
SmokeyMcChokey
Well-Known Member
What ya want me to say here. Physics are what they are.
iPerculate
Well-Known Member
You are talking about ideal perfect conditions in a sealed container. We are talking about real life.
You are forgetting the plants absorb the light energy. This light is used to grow the plant, not converted into heat. The plant and leaves are moist which cools it even more. The conservation of energy you are implying here with equal wattage equals same heat does not apply to this situation.
SmokeyMcChokey
Well-Known Member
That's not true but again I'm not going to sit here and debate it with you guys. It is what it is.
Lordhooha
Well-Known Member
The hand test with leds isn’t a good guide. The heat will radiate from the top heat sink which generally are fixed on the top hids radiate the heat differently. Still one watt is one watt. Still heat. Fans or no fan that heat is still getting produced. So 600 Watts of his or 600 Watts of led still produce the same amount of heat. The leds just produce more photons making the heat it does create more productive than the hid.
drsaltzman
Well-Known Member
OK ... that I comprehend.
Whatever the physics are, COB LEDs give me a ton of light with less heat.
Lordhooha
Well-Known Member
If you use an infrared thermometer the chips themselves will be close to the same temp as their hid counter part. The leds are simply better equipped to wick that heat off and away more efficiently all while creating more useable light for that watt compared to it hid counterpart.
drsaltzman
Well-Known Member
Useable is what it's all about.
Not having to worry about my tent going over 80° is the icing on the cake.