Can a 630 watt CMH match a 1000 watt HPS?

Evil-Mobo

Evil-Mobo

Well-Known Member
nizzaofficial said:
Cheers mate and I still need to do you a little video don’t I, I fell ill with that Japanese flu I was ill for about 6 weeks lol,

Let me know if you still want a video and I will do one for you no problems, Thanks
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Well maybe you can answer something for me. What issues if any would there be running a DE cmh hung vertically ?
 
Empdude420

Empdude420

Active Member
mauricem00 said:
the hydro shops in reno tell me that commercial growers in northern Nevada are replacing their 1000 watt HPS lights with 630 watt CMH lights and getting similar yields and better quality. I wonder about the quality of those chinese ballast but if commercial BM growers like them they may be worth a try. I've been looking at a 315 watt CMH on eBay and been thinking about getting one and a 3ft by 3ft tent to try it out. these lights were developed for growing plants and some think they may be the next hot new grow lights
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I have a 3x3 grow tent with a Sun System 315 Watt LEC Fixture with 4,200K Lamp, 120 Volt

Where I am, the temps do get to 50 at night (now) and this light will ONLY add 5 degrees to the tent - nothing more, and usually only 3 degrees between inside and outside the tent. The GOOD part is when the summer comes, it doesn't make the tent very hot. My tent is outside (garage / shed) so running that fixture is NOT good for reducing humidity and NOT good for heating up the tent. But, it sure is good on the electrical bill and it sure is good for taking pictures in the tent/while on, and it does grow well. I'm new to it - so I've been toying the plants between 22' and 14" --- and no matter what space I put it at, the plants NEVER EVER complain.

So, I don't know what is the best distance!!?!? I've been told to use 18" for the light above that I am using. But, I've been doing 16" instead and having no issues with leaves turning over or complaining. Suggestions?
 
growin-Jables

growin-Jables

Well-Known Member
I know this thread is a few months old but figures I'd chime in. inregards whether it's better to run 2 - 315w cmh vs 630fixture. I've found that in any tent grow 5x5 or 4x4. it's really better to run the 630w dual bulb fixtures instead of 2 fixtures. reason being having the 315w. bulb In there own hood, create a good amount of par. but the intensity really is limited. with a foot print of 3x3. having 2 fixtures inside a 4x4 or 5x5 is really just hurting your intensity. yeah penetration is a tad better, but again only because or different angles of lighting. the 630w cmh are more intense than a 600w hps and penetrate better. its covers up to a 5x5 footprint. packing two 315w bulbs under the same hood creates a very intense light that covers the entire tent area. so why sacrafice that much better penetration for better spread in an areawhere your already completely covering it with a 630. I yielded 700 grams in a 5x5 with only 6 plants and having the tent two thirds full . easily over a gram per watt and wasnt even scrogging either
 
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shakez

Active Member
growin-Jables said:
I know this thread is a few months old but figures I'd chime in. inregards whether it's better to run 2 - 315w cmh vs 630fixture. I've found that in any tent grow 5x5 or 4x4. it's really better to run the 630w dual bulb fixtures instead of 2 fixtures. reason being having the 315w. bulb In there own hood, create a good amount of par. but the intensity really is limited. with a foot print of 3x3. having 2 fixtures inside a 4x4 or 5x5 is really just hurting your intensity. yeah penetration is a tad better, but again only because or different angles of lighting. the 630w cmh are more intense than a 600w hps and penetrate better. its covers up to a 5x5 footprint. packing two 315w bulbs under the same hood creates a very intense light that covers the entire tent area. so why sacrafice that much better penetration for better spread in an areawhere your already completely covering it with a 630. I yielded 700 grams in a 5x5 with only 6 plants and having the tent two thirds full . easily over a gram per watt and wasnt even scrogging either
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Agree to some level ... I have run 630 for the past three years and id argue it does run hot... ok yea it’s not gavita hot but you aren’t coming near touching a bulb like you might with a T5 ... I’ve been running it in a 2 x 4 which is definitely tight however to your point the intensity is serious (like it will give you a headache if you are under it for extended periods of time NOT RECOMMENDED!!!)

Have maxed out that setup at 750g so that’s 1.19 on the 630w

Due to changes in the house the room is now inordinately expensive to cool so I’m switching to a 315w and putting in a light mover (yea in a 2x4 to move it one foot) ... my thought here is to cut the heat but with reflection and minimal light movement I should be able to bring the light in a little closer and maintain solid intensity (yes it still won’t be the 630 I realize) but I’m thinking i should still be able to maintain at least 1.19 on the 315w is 378... somehow that low of a number doesn’t seem to make sense to me so I’m putting the goal at 500
 
growin-Jables

growin-Jables

Well-Known Member
shakez said:
Agree to some level ... I have run 630 for the past three years and id argue it does run hot... ok yea it’s not gavita hot but you aren’t coming near touching a bulb like you might with a T5 ... I’ve been running it in a 2 x 4 which is definitely tight however to your point the intensity is serious (like it will give you a headache if you are under it for extended periods of time NOT RECOMMENDED!!!)

Have maxed out that setup at 750g so that’s 1.19 on the 630w

Due to changes in the house the room is now inordinately expensive to cool so I’m switching to a 315w and putting in a light mover (yea in a 2x4 to move it one foot) ... my thought here is to cut the heat but with reflection and minimal light movement I should be able to bring the light in a little closer and maintain solid intensity (yes it still won’t be the 630 I realize) but I’m thinking i should still be able to maintain at least 1.19 on the 315w is 378... somehow that low of a number doesn’t seem to make sense to me so I’m putting the goal at 500
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and i can definitely agree with you there. fact is these 630s do put off some heat. because not only are you running 2 bulbs in the same hood vs dispersing and spacing your heat out. the ballasts are also connected to the fixture with cmh. adding some heat to area as well. the kind of results i get though justify paying the extra 30 bucks a month to run my portable ac
 

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shakez

Active Member
growin-Jables said:
and i can definitely agree with you there. fact is these 630s do put off some heat. because not only are you running 2 bulbs in the same hood vs dispersing and spacing your heat out. the ballasts are also connected to the fixture with cmh. adding some heat to area as well. the kind of results i get though justify paying the extra 30 bucks a month to run my portable ac
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Dope pics! LEC/CMH over all others!!
 
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nizzaofficial

Active Member
Just to keep all you guys up to date with the latest CMH products there is now a single bulb 500w CMH/LEC fixture that houses a single bulb like the 315w version but a 500w version. And also there is a DE 1000w CMH fixture that has been in manufacturers hands for some time but they are slowly getting released to the public, there was an issue due to the DE 1000w CMH bulb not having a long life and not lasting very long in the fixture so they tried to come up with a DE bulb which housed 3 x 315w arcs, I do believe the 1000w CMH fixtures are still being tested in the field.

Cheers
 
Lucky Luke

Lucky Luke

Well-Known Member
nizzaofficial said:
Just to keep all you guys up to date with the latest CMH products there is now a single bulb 500w CMH/LEC fixture that houses a single bulb like the 315w version but a 500w version. And also there is a DE 1000w CMH fixture that has been in manufacturers hands for some time but they are slowly getting released to the public, there was an issue due to the DE 1000w CMH bulb not having a long life and not lasting very long in the fixture so they tried to come up with a DE bulb which housed 3 x 315w arcs, I do believe the 1000w CMH fixtures are still being tested in the field.

Cheers
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500w CMH? Link please. Would I be wrong in assuming that this would be close to perfect in a 4 x 4 flowering tent?
 
Johnny Lawrence

Johnny Lawrence

Well-Known Member
Lucky Luke said:
500w CMH? Link please. Would I be wrong in assuming that this would be close to perfect in a 4 x 4 flowering tent?
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I can't confirm, but I think I read somewhere that the spectrum isn't as good as the Phillips 3100k 315 bulbs.

I could be completely wrong, and if so, somebody please chime in.
 
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nizzaofficial

Active Member
Johnny Lawrence said:
I can't confirm, but I think I read somewhere that the spectrum isn't as good as the Phillips 3100k 315 bulbs.

I could be completely wrong, and if so, somebody please chime in.
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The spectrum of the 500w CMH fixture and bulb is as good as all CMH bulbs on the market give or take, but nothing will be better than Philips but there all not that far off, meaning the Philips 315w bulbs are not a million miles appart from any other 315w CMH bulb on the market there all close specs, the only thing that’s a million miles appart is the price of the Philips bulbs, but the 500w will blow the 315w CMH away. And so will the DE 630w CMH, the Philips 315w CMH bulbs are great but no 315w will compete against a DE 630w CMH bulb or a single ended 500w CMH bulb.

Cheers
 
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Lucky Luke

Lucky Luke

Well-Known Member
Lordhooha said:
I got my cmh from sunplix. They don’t have a 500 but does have a 400 an a bunch of other stuff. On top of having good customer support.
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I've had a brief conversation with Sonny from Sunplix and he was recommending the 400w cmh for a 4 x 4 for flower. Im a tad sceptical that the 400cmh would be much of an upgrade on a 600w HPS. My thinking was the 500CMH my be a better fit.
Are you running a 400 in a 4 x 4 by any chance?
 
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nizzaofficial

Active Member
Lucky Luke said:
Sorry to be a pain but who makes them? I cannot make out the name in your attachment and cannot find them for sale.
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It’s ok your not being a pain I am always here to answer any questions and always here to help,

I sell these lights and a whole range of CMH technology, I have my own brand SCROGLine, you can YouTube my channel SCROGLine, I am mostly known for my SCROG product I invented called the SCROGLine pro, but I mostly come on these forums to give people help and advice but I am also a certified retailer in hydroponics selling all equipment and I also have my own line of products under my brand name SCROGLine,

The CMH 500w hasn’t been released yet by other retailers that I know of they are very new to the market. Let me know if you want to try any out and I will help you out,

Cheers
 
Lordhooha

Lordhooha

Well-Known Member
Lucky Luke said:
I've had a brief conversation with Sonny from Sunplix and he was recommending the 400w cmh for a 4 x 4 for flower. Im a tad sceptical that the 400cmh would be much of an upgrade on a 600w HPS. My thinking was the 500CMH my be a better fit.
Are you running a 400 in a 4 x 4 by any chance?
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I got the de 630 and it was pumping a shit ton of light out well past my old 1000 watt setups. It was covering my 8x8 test room with stupid amount of light.
 
M

Mfincher3526

Member
nizzaofficial said:
I have only just got the Fixtures so it is literally Brand new, The DE 630W Light fixtures I have they have been doing really well in a 4' x 4' They are Amazing so I can only imagine what the DE 1000W Light fixture will do in a 5' x 5', Let me know if you would like to try any out I will be happy to sell you as many as you need,

Cheers!!
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I've been told a 1k de cmh is to much for a 5x5? I've been thinking very seriously about putting one in my 5x5x7 tent
 
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