CMH low par output? Any insight?

Jjgrow420

Jjgrow420

Well-Known Member
oldtymemusic said:
k for knowitallism...
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So someone says something you do isn't right so you have to go into attack mode? Insecure much? It's pretty common knowledge that running a cmh bulb under listed rated wattage produces an inferior spectrum. The arc makes a certain temp which produces the proper spectrum. Do whatever you want man
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You're right I'm shit
 
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2com

Well-Known Member
Jjgrow420 said:
I dont get it you can buy a 630w de or 2 bulb for around 200 bucks
The new 1000w de cmh is on sale on Canadian Amazon for 230 with a bulb. Why fuck with weird conversion bulbs?
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Do you have a link? I'm not familiar with it, or what brand your reffering to.
 
O

oldtymemusic

Well-Known Member
Jjgrow420 said:
So someone says something you do isn't right so you have to go into attack mode? Insecure much? It's pretty common knowledge that running a cmh bulb under listed rated wattage produces an inferior spectrum. The arc makes a certain temp which produces the proper spectrum. Do whatever you want man
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You're right I'm shit
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just because you dont think so, doesnt mean what im doing is wrong. my cmh performs better than my hps every time for 4 years now, dimmed when i want. only you have a problem.. btw this pic is nothing to brag about.
 
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Jjgrow420

Jjgrow420

Well-Known Member
oldtymemusic said:
just because you dont think so, doesnt mean what im doing is wrong. my cmh performs better than my hps every time for 4 years now, dimmed when i want. only you have a problem.. btw this pic is nothing to brag about.
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K cool
Do share a pic of your setup I'd love to see some dimmed out green spectrum grown plants
sunmastergrowlamps.com

LIGHT SCIENCE March 2018 The perils and pitfalls of dimming HID lamps

LIGHT SCIENCE March 2018 The perils and pitfalls of dimming HID lamps The perils and pitfalls of dimming and overdriving HID lamps HID systems for plant growth are dimmed for a variety of reasons. Whether to
sunmastergrowlamps.com sunmastergrowlamps.com
HID systems for plant growth are dimmed for a variety of reasons. Whether to simulate sun-up / sun-down or to reduce light levels while saving energy, some brands advertise dimming is as a significant feature/benefit for their system. Unfortunately, dimming HID is not as simple as incandescent or LED and, when not done properly, can compromise your lighting system or even cause harm to you and your plants. Adverse effects when dimming HID lamps can include the following:

Decreased efficacy: µmol per watt decreases as lamp is not operated at its designed
Changed spectral quality: As CMH and MH lamps are dimmed, the capsule (arc tube) within the lamp operates cooler. In many cases, a cooler arc tube will not keep the salts (halides) engaged which causes the spectrum to become less broad and more pronounced in the green area of the spectrum
Decreased light outpu: Lamps dimmed during start-up may cause tungsten to sputter on the arc tube wall, causing blackening and less light output
Other HID light systems are marketed with a ‘turbo charge’ or similar setting where the lamp is slightly or more-than-slightly overdriven. When considering these systems, one should understand the potential adverse effects when overdriving HID lamps:

Shortens lamp life: Lamp life can be shortened to ½ rated life or more. Light output typically depreciates at an accelerated rate when lamps are overdriven.
Risk of rupture: Overdriven lamps operate at a higher temperature which significantly increases the risk of non-passive failure.
 
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oldtymemusic

Well-Known Member
and btw know it all, if youre so smart and could read so well you would see in my first comment i said it out does out do my 600w hps dimmed. i didnt tell the op to do that all the time. didnt say everyone should. you took it and ran with it like the big hero you are... i dont need approval from you!!
 
Jjgrow420

Jjgrow420

Well-Known Member
oldtymemusic said:
lol scientists are always right.. positive experience is wrong.. good day desk top know it all!
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Dude you're dumb. That's from the manufacturer of some of the best bulbs on the market. You're obviously smarter then all of them.
And all I said is dimming cmh bulbs isn't the proper thing to do because it changes the spectrum. You got all butt hurt and started comming at me with your bro Science. I sent you links and evidence of what I said is true.
You offered anecdotal bro science of a grow that prob doesn't exist to begin with. This is my last msg to you. I don't have time for ignorance. Have a good one.
 
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