Ceramic Metal Halide (CMH)

[Bigtimer7]

Hey simba, I bought my Cmh bulb and one of them after 2 months of use, I turned it off and then brought it to my veg room and tried to turn it on after plugging it into a extention cord for appliances it would not work? It now will not turn on do you know what this could be from?

 

[Guest]

LOL -

What do you mean no complete grows yet? I have been using this bulb since it was first released. It was a no brainer! The Hortilux Super (junk) produced plenty of weight, but not nearly the quality. Not to mention the stretching and piss poor root growth. Now what was beatiful is that for three years I ran nothing but clones of two moms. One very indica and one heavily sativa (nl#5Xhave). I also ran the exact same set-up every time from temps, nutes, light schedule and additives. No changing what works right?

Well not so, about 2years in I tried the CMH and loved it. Ran the Hortilux over 3 clones for one last go after that and felt like I wasted time, space and effort. The clones under the cmh were tighter, shorter, and more fragrant, potent.

Now I don't sell bulbs (or pot for that matter). I just try to share my experiences with other growers to help them have the success I have had.

 

[Guest]

Great data and exchange everyone! If it stays civil I love it!

 

[gramsci.antonio]

LOL -

What do you mean no complete grows yet? I have been using this bulb since it was first released. It was a no brainer! The Hortilux Super (junk) produced plenty of weight, but not nearly the quality. Not to mention the stretching and piss poor root growth. Now what was beatiful is that for three years I ran nothing but clones of two moms. One very indica and one heavily sativa (nl#5Xhave). I also ran the exact same set-up every time from temps, nutes, light schedule and additives. No changing what works right?

Well not so, about 2years in I tried the CMH and loved it. Ran the Hortilux over 3 clones for one last go after that and felt like I wasted time, space and effort. The clones under the cmh were tighter, shorter, and more fragrant, potent.

Now I don't sell bulbs (or pot for that matter). I just try to share my experiences with other growers to help them have the success I have had.

Yeah i mean complete side by side grow, using clones.

Anyhow here an update for you guys:

Fifth day of flowering, two Original Flo feminized in coco.

 

[Guest]

gramsci.antonio -

Those girls look nice and healthy. Is that a grow tent? If so which one and how do you like it? (off topic I know)

Thank you,

Azeo

 

[gramsci.antonio]

gramsci.antonio -

Those girls look nice and healthy. Is that a grow tent? If so which one and how do you like it? (off topic I know)

Thank you,

Azeo

With less than 300 $ i built by myself a wooden box with 0.6 inch thick wood.

 

[Guest]

Nice! I am in an old cabinet/closet that was removed from a hotel just prior to demolition.

 

[supermanlives]

will the ceramic mh work with digital lumitek ballasts ?

 

[gramsci.antonio]

will the ceramic mh work with digital lumitek ballasts ?

no at all. Sorry.

 

[Blunted22]

are these the same cmh that people were useing 10 years ago or are they different?

 

[MostHigh]

Blunt, it is not the same design as what the bulb was 10 years ago. I've a buddy with an old style CMH400...vastly different bulb, far more superior now in all paramaters of performance and light emmissions.

 

[simba]

ya there not the same.. few things have improved slightly but enough to make a dif for us.. IE the Seals on the ends of the arc tubes are allot better now..

ya i guess im a salesmen however i REFUSE TO SELL GARBAGE or products that dont work.. IE No overpriced chit lamps.. (and ya honestly id rather u buy from me, however if thats your reason for not trying them, buy elsewhere.. im that confident in them..

thats what got me into Lighting in the first place, Looking for better than we where offered in our markets..started looking further outside the box
And no i didnt start in the horti lighting world..rather a feild in lighting we all scared of when it gets behind us.. (and the specs on those are tight and very stricked Regs)actully learned more bout lighting and how it behaves than people in university.. ya i may not know some of the terms but real world experiance..

as far as side by sides.. Unofrt i cant post any of my results.. To easy to find me.. and or tie to me in crt

 

[MPL]

I just ordered my lamp today. Took a bit longer since I got the 400w ballast as a gift and I had only planned/budgeted for a 150w-250w set up.

So my 400w Horizontal CMH is on its way, and I should have everything ready to go soon.

 

[Blunted22]

i just spent 800 or so on two 400w hps ballasts 2 hoods 2 cmh bulbs and just finsihed my room... Im plannin on buying 4 more sets to complete my room for a nice even spread im investing alot of money in this im hopeing that this will be right for me...

 

[gramsci.antonio]

ya i guess im a salesmen however i REFUSE TO SELL GARBAGE or products that dont work.. IE No overpriced chit lamps.. (and ya honestly id rather u buy from me, however if thats your reason for not trying them, buy elsewhere.. im that confident in them..

i think your product are great, and infact pushed some big reseller in my country to try them.

And i found them great.

But a noob looking around could think that those lamps are the Sacro Graal of growing, wich isn't. Maybe.
Or that you are simply a person intersted in those lamps. You are a salesman and i don't trust salesman on principle.


Anyhow here some updates on the status of my lamps:









12th day of flowering.

 

[MPL]

I am a salesman and generally don't trust salespeople either. That said, a lot really depends on the industry. I think the person selling these lamps probably isn't making a lot on them. I doubt the volume would make up for the lack of profit due to having to compete with other online sites (and advancetechlighting actually beats most places I've seen the lamps listed for sale at).

The pictures are great!

I don't think anyone here believes that the CMH lamps are the holy grail. I just think they are a good evolutionary step in artifically lit horticulture, based on my research.

But a noob looking around could think that those lamps are the Sacro Graal of growing, wich isn't. Maybe.
Or that you are simply a person intersted in those lamps. You are a salesman and i don't trust salesman on principle.

 

[Guest]

Hmm

Checked out these CMH bulbs online today...It looked to me that when comparing a CMH to a HPS that the lumen loss is quite significant

For example a 250 CMH is listed as giving out 20k or so lumens...On the otherhand a 250 HPS is somewhere in the order of 33k lumens

Is such a huge loss in lumens really worth the offset in a little less heat? I realize the better light spectrum offered by the CMH, but for my ladies, I think I'd go for the 33% more lumen avaioable with the HPS

 

[Guest]

knna -

I read through every post and graph at the other site (through your link) Lots of hard work there. I wonder where you come up with the early or fast depreciation claims? Performance maintenance is great as a % of expected life span for a bulb with that much blue.IMHO I have been reading blue prints and technical drawings for years and years and years and have learned that copies and or pastings can suffer in the area of deffinition and scaling. Is it possible to be sure that the output graph sources are "clear" and concise enough to put this much stake in. I mean to pull a graph from a PDF form on-line and then generate numbers of that type. The difference in your evaluations may be PUR/W 1.02 on one bulb and 0.91 (just numbers for example not specific or from your work). How do we know that the source material isn't producing a margin of error in excess of the difference between two?

Not flaming the work or the methodoligy/science/calculations used. Just the deffinition or distortions in the source material. I mean you are counting pixels.

Just asking, and thanks for your intelligent contributions!!!!

Azeotrope

 

[simba]

lets look at lumen's this way..
lumens are for humens and was a GREAT Marketing Game from the stores.. To get you to buy specialty hps lamps.. because they dumped more lumen's..

another way to look at it.. it has less lumens compared to hps yet when u look at cmh it looks way brighter
IE our commercial customers will switch out 24 400 MH's and one has gone down to 20 250 cmhs and its still to bright and brighter than the MHs.. cause it tricks the eye.. (gas station) that says lumen is dirt even for Humen eye.. (luara chime in your blind from it, but wasnt from HPS)

when comparing cmh to hps the less lumen's cmh has compared to hps.. the better..
more lumens = less energy to plant
for our argument..

you have to look at the nm range and then the absorbiton ratio. youll see hps is right at 600 wich is low % of absrobtion but the 650 is HIGH % absrobtion wich means less power from lamp = more energy..

for me text sucks but we are missing the biggest point that cmh dumps in 100% of the useable range by plants No other lamp really does this.. and then within that it dumps Good energy where the plant can take up almost all of it..

as said before by me abouts 30% of hps is outright wasted so its less power to plant.. when you look at it from plants perspective..

its like PH when its off Like hps its harder for plant to take up anything if any nutes (if to way off)
but cmh is Perfect PH all energy can be used and effeciantly..

 

[Deft]

Question for ya Simba, I just got my 250hps and am going to fix up a fixture and ballast box soon. If I leave the ballast/cap/igniter outside of my growing closet will the heat from a 250w CMH bulb alone require ventilation right away for my 42 cubic foot closet? Temps are around 60 lights off and 77 lights on with ~210w of floros right now.