CMH vs LED vs HPS

[goingrey]

We can of course discuss LED vs HID, but do HPS have any advantages over CMH?
CMH is more effective, grow better weed and the bulb lasts much longer.

Not necessarily true for two of those.

Philips Son-T Pia Green Power 600W (HPS): 145 lumen/W, 5% loss after 12000 hours
Philips Mastercolour CDM-TP 930 (CMH):120 lumen/W, 10% loss after 8000 hours

Sure it's a fancy expensive HPS bulb. Still under half the price of the CMH bulb, that you would need two of to match the output. The price would be a big benefit. But can it match the quality, even with it's "dual spectrum"?

 

[Hammerhead]

Ive had no problems using the cheapest CMH bulbs I can find. They def last years.. If you buy for a name brand then sure that's gonna cost more no matter what you buy. CMH has a way better spectrum, better efficacy, and less heat than any HPS does. CMH crushed the results I got from HPS.

Philips Son-T Green Power 600W mogul bulbs

Life to 20% Failures (Nom)

16000 h

Life to 50% Failures (Nom)

20000 h

Philips Mastercolour CDM-TP 930. Not many if any use these bulbs.

Life to 50% Failures (Nom)

30000 h

We use these in both 4000k and 3200k. You can find these for $50

CDM ELITE TMW 315/930/U/O EU | Philips lighting

Perfect sparkle, reliable life | Philips lighting

www.lighting.philips.com

 

[med-man]

My favorite line I always here from led heads is:
bro....600w from led is less then 600w from hps hahahaha
There is a place for led. No doubt. But there is alot of insanity preached by ledheads.

Your power bill will be the same if it's a 600w toaster or hid or led

mm

 

[Hammerhead]

I like to test real watts on LED fixtures. No equivalent BS here. That cheap 800w LED I just got measured 818w.

Watts are watts no matter what light is used.

 

[zachrockbadenof]

I like to test real watts on LED fixtures. No equivalent BS here. That cheap 800w LED I just got measured 818w.

Watts are watts no matter what light is used.

i am just about finished with my 1st grow with an mars fce8000 in a 5x5ft tent, with the power tuned down to about 70pct... 1/2 the plants r down and trimmed em today... 1st impression... airy/airy buds... i trim over a screen... the amount of tricomes left over is not worth mentioning -

NONE has been smoked yet, and that is always the true test, but compared to our last grows (prior to cmh;s) under 4x1000 hps/mh's in a room, there is no comparison...

our last grows were under 2 315's in a 4x3.5ft tent, and were disappointing...but... the buds def were not as airy as this present grow

but again the proof is in the smoking... we will see...

 

[Hammerhead]

The genetics you grow play more role than any light will. I had no issues with Airy flowers under a mars FCE-6500.

My CMH flowers are the best quality Ive ever grown. Ive also been growing cannabis for 60 years. Experience will make a difference in the quality you produce.

 

[Chi13]

I converted to LED about 6 years ago. I gave away my old HPS to a friend. I have been really happy with the quality of bud and yield of LED, but I am now on my second LED in that time due to malfunction with the first. I now have problems with the latest one. Tbh, I am really thinking of switching back to either a cheap HPS or getting a CMH. I love the idea of LEDs and think they are the future, but what is the point of sending a lot of money where you are plagued with breakdown? The old HPS I gave to a friend hasn't missed a beat in that time.

 

[Hammerhead]

Ive had 1 Growers Choice 420 fail out of all the LEDS. That's not bad. I'm sure GC would have replaced it if I contacted them but the LED was a freebie so I never said anything.

 

[goingrey]

Ive had no problems using the cheapest CMH bulbs I can find. They def last years.. If you buy for a name brand then sure that's gonna cost more no matter what you buy. CMH has a way better spectrum, better efficacy, and less heat than any HPS does. CMH crushed the results I got from HPS.

Philips Son-T Green Power 600W mogul bulbs

Life to 20% Failures (Nom)

16000 h

Life to 50% Failures (Nom)

20000 h

Philips Mastercolour CDM-TP 930. Not many if any use these bulbs.

Life to 50% Failures (Nom)

30000 h

We use these in both 4000k and 3200k. You can find these for $50

CDM ELITE TMW 315/930/U/O EU | Philips lighting

Perfect sparkle, reliable life | Philips lighting

www.lighting.philips.com

Yeah there's cheaper CMH bulbs, but also cheaper HPS bulbs. HPS is cheaper in every price range.

I was also under the impression that CMH is much more efficient but it does not actually seem to be the case. Maybe it can be more efficiently used because less IR lets you keep them closer though. Both pale in comparison to LEDs in the efficiency department of course.

The reason to run HID would be a cold room - HPS has an edge, or to get a better spectrum - CMH.

 

[exoticrobotic]

My CMH flowers are the best quality Ive ever grown.

That has been my experience too.

I may have reduced bud weight with CMH vs LED but that CMH bud blows away my LED hashes and oils in my experience.

 

[exoticrobotic]

CMH bud has always been a wow moment after smoking it.

I'm on my fifth led spliff this morning and just starting to catch a buzz.

Gotta get that wahwahwah Vroooom going again

 

[Jaysways]

hps will also need bulb replacement constantly, yearly ballast replacement and hood replacement, if you even plan to try to compete with the capability of leds. With all hps equipment brand new you will barely hit an average ppfd of 900-1000. Efficiency rating maxes out under 2.0 and youre paying an average of 30% more to do this.

Another “my friend”, “my buddy”, story here, who had a dismal yield of .5 grams per watt(this is an outdated method of measuring success, grams per sq foot per cycle translate way more), i can promise you a mediocre grower can hit 60 gr per sq ft and with attention to detail, persistence and some talent can breach 90 grams per sq foot with high efficiency leds(2.8+) and at a fraction of the cost. To translate that into grams per watt is case by case but this is nearly 3g per watt. This is with all conditions ideal, co2 enriched environment, 1200+ average ppfd, healthy hearty strains and a full term cycle.

To put this into a too long didnt read summary. Leds, if used by someone who knows what they are doing, will yield way more for less cost, every time.

Dem L-err-Dee's ain't no good let me tell ya boy..

Back in my day we had to carry the water pails uphill both ways each time we watered our plants. Had to catch the sunshine in a paper bag lined with tinfoil to keep it fresh, 3 days work for a single 12/12 cycle. But, let me tell ya, that was the best way to grow bud ever. The old way is the only way to go kiddos, don't bother learning anything new, no improvements needed.

This is funny

@Crooked8 I think you talk a lot of sense, half the other posts are complete nonsense lol

 

[Crooked8]

This is funny

@Crooked8 I think you talk a lot of sense, half the other posts are complete nonsense lol

I really appreciate you saying that! Thank you!

 

[Hammerhead]

Def nothing wrong with using HPS. Today there are bulbs with better spectrums/efficacy. .Mix HPS with CMH.

 

[Jaysways]

I don’t think it matters what light, get what you can afford for a start and then get what works, I’ve used all lights but I definitely get the best crops presently, or maybe I’m a better grower, who knows. I used hps 10 years ago.

And LEDs work for my current set up also as I would just be fighting heat constantly.

 

[FletchF.Fletch]

Someone started a thread asking Who is the resident Tissue Culture expert?


I thought about the guys who are always Crying about LEDs.

 

[Crooked8]

Someone started a thread asking Who is the resident Tissue Culture expert?


I thought about the guys who are always Crying about LEDs.

I can promise you anyone who cries about leds didnt give the concept a fair shot. You cant buy some cheap led and expect it to perform like an hps. You have to spend big money and not be daunted by your first few runs. It requires full understanding of all cardinal parameters and full environmental control to see the possibilities. Anyone who dials it in completely sees higher yield of better quality for less costs per run. Cant see how anyone experiencing that would cry hhaha.

 

[snakedope]

The spectrum issue just don't add up to me as the ultimate cause of why they suck at making oils, all the spectrum talks are really going against what we grew and smoked for years with poor spectrum lamps..

You guys need to decide, if the bud was good for years with hps and mh, which are lacking spectrums and intensity at the spectrums lamps, and now the bud got worse then it's not the spectrum.

People adjust spectrums with LEDs, brands also, people grow with all kind of QBs, panels, COBs, but still get the same medicore results
So I don't see what's the fuss behind this concept, a lot of theory but not much evidence that if your LEDs will just have more diodes in the right wavelengths that will somehow make your weed killer...

Maybe just maybe if your diodes had more drive behind them with scientifically proven helpful spectrums then just maybe

 

[JKD]

PPDD > light quality.
PPFD + light quality > PPFD.

 

[Crooked8]

The spectrum issue just don't add up to me as the ultimate cause of why they suck at making oils, all the spectrum talks are really going against what we grew and smoked for years with poor spectrum lamps..

You guys need to decide, if the bud was good for years with hps and mh, which are lacking spectrums and intensity at the spectrums lamps, and now the bud got worse then it's not the spectrum.

People adjust spectrums with LEDs, brands also, people grow with all kind of QBs, panels, COBs, but still get the same medicore results
So I don't see what's the fuss behind this concept, a lot of theory but not much evidence that if your LEDs will just have more diodes in the right wavelengths that will somehow make your weed killer...

Maybe just maybe if your diodes had more drive behind them with scientifically proven helpful spectrums then just maybe

The bud didnt get worse. Most people dont know how to use Leds correctly yet. Leds make plenty of resin, not to beat a dead horse but as ive stated before, our product is higher quality than ever and its resin and terp production is insane.