Ceramic Metal Halide vs HPS
- Thread starter OldMedUser
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Propa Gator
New Member
Phillips doesn't make these bulbs for, nor markets them to horticultural uses.
Their spectrum is spectacular, like the sun. Preferred by people in commercial spaces.
I think it's kind of handy that cannabis likes the same temps, humidity, and light as I do.
CMH grows good herb, but Phillips doesn't care. Officially. Yet
Their spectrum is spectacular, like the sun. Preferred by people in commercial spaces.
I think it's kind of handy that cannabis likes the same temps, humidity, and light as I do.
CMH grows good herb, but Phillips doesn't care. Officially. Yet
Sun check out these bulbs if you have a digital ballest..https://lifelighttec.com/doccuments/LLI_Fall07RetailWeb_B3.pdf
Tyrone Hamilton
New Member
Those look like MH conversion bulbs - the CHM looks like it still needs a mag. ballast - did I miss something?
thanks for the link bro!
I'm going to check those out!
I'm going to be pissed if those have been available since 2007, lol.
I didn't think anyone was making CMH bulbs that run with digital ballasts yet.
thanks again brother!
I'm going to check those out!
I'm going to be pissed if those have been available since 2007, lol.
I didn't think anyone was making CMH bulbs that run with digital ballasts yet.
thanks again brother!
The Sunpulse CMH bulbs down towards the end of the PDF seem to be able to run on digital ballasts.
I'm going to research it some more.
I'm going to research it some more.
onthe420train
New Member
I think for flowering you will undoubtedly get a better yield with a hortilux versus a cmh. The buds may not deter in quality but the intensity of the light bulb is a fraction of the hortilux.
38,000/55,000 in lumens for a 400w cmh/hortilux
38,000/55,000 in lumens for a 400w cmh/hortilux
From what I understand the Philips bulb is the only one worth buying for horticulture. It does require an HPS magnetic ballast. Here's the place to get the bulbs. There is a GE digital ballast, on that site, for the CMH but it is really expensive.
The SunPulse CMH bulbs have been out for a while. They're expensive, and the company makes 4 different spectrum bulbs for each wattage, to be used in veg, bloom, late bloom, etc.
They also want you to use all 4 during the grow to get the best results. I think these bulbs are about $100 apiece, so even using just the 4K bulb for the whole grow winds up double the cost of the Philips full-spectrum CMH bulb.
They do run on digital ballasts, though.
Yeah, the GE digital ballast for their CMH bulbs is around $350. It will run both the 250w and 400w Mastercolor bulbs.
They also want you to use all 4 during the grow to get the best results. I think these bulbs are about $100 apiece, so even using just the 4K bulb for the whole grow winds up double the cost of the Philips full-spectrum CMH bulb.
They do run on digital ballasts, though.
Yeah, the GE digital ballast for their CMH bulbs is around $350. It will run both the 250w and 400w Mastercolor bulbs.
Again SUN you are correct...LOL
even a broken clock is right twice a day
Propa Gator
New Member
HTGSupply 400 magnetic HPS ballast, cord set, bulb, no reflector, cost me $100 + shipping.
I have and run a 250, and I believe they are the best. AND for the least. Who knew?
I have and run a 250, and I believe they are the best. AND for the least. Who knew?
there's been discussion about them on the net for a while, but since it's not a "horticultural" light, and maybe because it's a metal halide that runs HPS ballasts, it's been very slow to make any inroads with growers.
Propa Gator
New Member
Retros are rated for open fixture. Very precious few HPS have envelopes of such tough glass, so
you need a safety glass sided enclosure. To make and contain heat for removal by air.
But it is, after all just plants that they light.
you need a safety glass sided enclosure. To make and contain heat for removal by air.
But it is, after all just plants that they light.
My indoor (indica dominate) strains gets a poor calyx to leaf ratio using a 4k CMH. But using the Life Light 3k spectrum CMH bulb during flowering I get a much better calyx to leaf ratio. The 4k bulb is very good for outdoor strains being grown indoors (sativa dominate) strains..
The 4k CMH is a full spectrum bulb.. It's not so good at flowering strains that have been adapted to work good with a 2k HPS bulb indoors. That's been my CMH experience anyway.
The 4k CMH is a full spectrum bulb.. It's not so good at flowering strains that have been adapted to work good with a 2k HPS bulb indoors. That's been my CMH experience anyway.
OilFieldTrash
Well-Known Member
I think that I read somewhere that the Life Lite Ballast is made in the USA.
great info bro,
I'll check it out, thanks!
One way or another, I going to give CMH another run.
Yeah I would say its the best VEG bulb for sure from what I've read. Do they produce heat similar to a MH bulb SS?
I don't understand why some growers say they're just a great veg bulb.
The spectrum tells the whole story, although dogsnova's strain specific info is very interesting and helpful.
They run several degrees cooler than MH, and actually even run a bit cooler than HPS.
The spectrum tells the whole story, although dogsnova's strain specific info is very interesting and helpful.
They run several degrees cooler than MH, and actually even run a bit cooler than HPS.