Ceramic Metal Halide (CMH)

[Wacky Tobacky]

OK i didnt know there was a big argument about the bulbs....

i just want to know what would be better. i dont want leafy buds. i might just stick with HPS for flower since its already proven over MH in flower but CMH i dont know so id rather go with the tried and true.

im curious to see your results CTSV.

also do you have a CTS V series? my buddy has one. awesome car.

 

[CTSV]

Yep, one of the 6.2 LSAs.

 

[foo_bird]

I've read this whole thread needless to say cmh is what I'm fixing to use
just hope I can keep 400 watts cool in 3sq ft and 30ins high space
i'm sure gonna try

 

[Murphy]

I've read this whole thread needless to say cmh is what I'm fixing to use
just hope I can keep 400 watts cool in 3sq ft and 30ins high space
i'm sure gonna try

I did it in less space then that Brother, it's all about moving the air fast and guessing that you meant 3 cubic feet, not square feet.

 

[messn'n'gommin']

I've read this whole thread needless to say cmh is what I'm fixing to use
just hope I can keep 400 watts cool in 3sq ft and 30ins high space
i'm sure gonna try

Foo_bird, just my two cents and you are welcome to take it for what it is worth, but I think you may be trying to use too much light in such a small space. Three square feet of floor and 30" of height will probably create more problems (i.e heat) than it would be worth the extra effort and expense to solve. With 400 watts that gives you 133+ watts/sq.ft. You might find it a bit easier to go with a 250w'er, or better still, a 100w-150w CMH (or even two) with a comparable pulse start MH ballast. Even then, 200-300 watts is going to be a lot of heat you will have to deal with, CMH or not. Other than that, you might try to find a larger space to use the 400w in, but like I said, this is just my , and is only worth the paper it is written on. Good luck, man!

Namaste, mess

 

[hoosierdaddy]

400cmh+ 150HPS
19" x 23" x 60"
Separate air cool tube w/6" inline, 6" fan pulling ambient through chamber, AC unit.


The light tube takes up a good bit of precious space, but I can still grow out 8 plants.

Can you see the spectrum reflecting in this shot?

I don't need the AC unit on unless garage temps are past 80degF. Right now my temps in the garage are at about 57-58 degF (6am no heat in garage) and my cab temps are at 67 deg F in the flower chamber w lights on. AC is off. The sensor I have above the canopy reads 77 degF.

 

[foo_bird]

I know 400 watts is over kill but going to smaller bulbs doesn't save much money
my disability check only goes so far in 3-4 months I'll have 3x3 or 4x4 ft. space
by then I'll like to be smoking what I grew in smaller box getting ready for the bigger
one so much to think about so little brain to think with lol

 

[messn'n'gommin']

I know 400 watts is over kill but going to smaller bulbs doesn't save much money
my disability check only goes so far in 3-4 months I'll have 3x3 or 4x4 ft. space
by then I'll like to be smoking what I grew in smaller box getting ready for the bigger
one so much to think about so little brain to think with lol

There are those times I actually think I know what I am talking about when guys like Murphy and Hoosierdaddy show me what is truly possible!

btw: Don't sell yourself short Foo_bird, at least on an intuitive level, you knew more than what I was sure I knew! lol...Ya know?

Namaste, mess

 

[smokesalot420]

Here is my "fat cola" for the fat prick!

I am running 2 400W CMH with a 400W HPS in between the CMH's. I have noticed that plants that are equal distance from the HPS and CMH will still orient toward the CMH's. My HPS puts out more lumens, but if they are lumens that the plant doesn't use, then what are they good for but producing heat? It's funny that I missed this part of the conversation, but I posted this same thing yesterday in another thread....

Anyway, as for the CMH's, my plants have much more resin production now that I'm using the CMH's, but I use dual-spectrum that leans more toward the CMH's atm. I plan on upgrading to a 600W HPS for the middle soon, but I am keeping the CMH's as my plants seem to love them. I also grow organically for quality, I started out doing hydro but like the taste/quality of organic soil better. For some people it's not all about yield or bag appeal!

 

[minds_I]

Hello all,

Well, I am of mind to not get in the middle of this but....lets see the results...then talk your shit.

I have a 250 CMH. MY first experience with it was not great...could be grower error, environmental error. I am now back to the HPS.

I will be using the CMH this summer as the temp difference is favorable.

Anyway, lets see the buds Oz. Why wait till harvest, lets see them now.

minds_I

 

[kaotic]

Is anyone making 600 or 1000 watters yet?

 

[OsWiZzLe]

i've used these bulbs for a few grows along with a few other types to see if anything can fuck with the proven HPS....i have no other agenda....anyways...heres to show u a lil something

 

[OsWiZzLe]

heres the shwag i grow under HPS... Royal Haze and Lemon Kush

 

[foo_bird]

hey Osfizzle you don't like CMH well we do so
it was the STD of the CMH that 1st got me interested
then I read at the beginning of this tread at lest 3-4
people needed to replace a 400w HPS so they tried
a CMH then a month or2 latter they said they where
changing all thier lights to CMH over n over again
people tried and liked the results besides you the only
complaints I read were "the buds are harder to trim"
and "my plants are growing so fast I can't keep up"
out of 2516 posts I think that speaks for its self

 

[Seismic]

Awesome shot CTSV! I just made the switch to cmh myself, hopefully i'll be able to get some frosty nugz like that.

If you dry out your soil, and put some sand on the top, you will clear up those fungus gnats.

Your grow looks like you picked you favorite grow diary, and copied it. Nothing new there. HPS for flowering, dirt, etc, lots of crap and clutter...

Let's see some macro's, that is where the truth is, want to compare pics?

 

[simba]

Suppers All,
Ballasts, if it fires HPS and is Not marketed as Digital/electronic it will run CMH. (250,400 Watt)

still no 600+ watt CMHS (that we want)
Think 300 watt putting out same energy as current CMH 4k 400 watt

Os, how can Proven HPS be better than CMH
when its been long standing mixed SPD from MH and HPS are proven better than HPS alone, and what is CMH a FULL SPD Combo of HPS and MH.. (actully is.. as its a HPS arc tube with MH gases and salts)
not only that the EYE Blue is touted to be the best full spd Well it was till CMH 4k...(even EyE horti says the philips CMH 4k is better than there eye blue for one bulb use)

another bit of PROOF CMH has Proven itself..
NGW the major Garden wholesaler has Picked up the CMH lineup.. (20 bucks higher than Adv Tech to)
bedsides the fact like 10+ forums have cmh threads going (all over a year old) and only have a Few (1-5) people who have come back and not 100% liked there cmh and within that most those people have even said it was prob them not the lamp>. ur the only one that has been complaining about cmh over and over with no REAL PROOF of its negatives..

another great benefit i LOVE about cmh.
if you hang your light at 4' and dont move it.. in a 4x4 area no plants Stretch.. with HPS you have to get the lamp so close otherwise your stretching bad.. (that alone is a top reason to use cmh vs HPS>>no stretch means shorter plants means more light getting to sides of other plants Not being blocked...

os you say "if it aint broke dont fix it." HPS was never Great it was merely the best out there for Yield but with a loss of qaulity vs MH.that is fact jack.

oh going back to vegin the only reason you needed to veg so long under hps cause it gave so little energy the plants want.. when u grow with cmh u cut ur veg time down.man i seen so many people be like oh i need to veg for months.. with cmh the same people are cutting in half and not complaining..

and you keep harping the cmh plants are Leaf freaks..
ill give ya they do have more leafs vs hps plant, and why is that..
CAUSE THE PLANT KNOWS THERE'S MORE GOOD ENERGY and it puts out a few more leafs to pick it up..
Also to that i will say if u buy crappy breads that are bread under hps then yes when they go under cmh they poof back out with leafs.. but what u forget to say is the same effect will happen if u put them outside under full sun spd.

the breads that where bread under hps are actually Digressed a bit>>>
with that said those breeders did pick out the best of the phenos for HPS production.. (those peeps that are stuck on HPS stay with those strains)
cmh users pick strains that where bread/rated for outdoor IE bread under FULL SPD under sun, MH/hps combo...

(within that most growers go after predominantly indicas because of height concerns and ya indicas are like bush's under cmh i say go after a 50/50 inidca/sativa mix or even higher sativa content.. (cause cmh doesnt promote stretching like hps does)



OS u posted the serial number to that thing.. I would never warranty that thing out or sell it..if i where u (thats not a diss just trying to cover ur ass).. u gave to much info in that pic...

i still Cant believe ur still posting pics of lamps.. Chit i could post pics like that all day long but all they prove is i own the lamps not that i even tested them or tested them properly..(ive got lamps from all Major MFrs and some that arent even near public release)

I think u work for or own a store and dont like the fact u cant profit off CMH like u can off HPS.. dam i sell every thing and HPS makes so much money it aint funny.. example a certain HPS can be had for $7 and i sell for $90 no one gets cmh for that and most sell for $60 (adv tech 53) CMH has no PM vs HPS (hense why the stores haven't started Promoting it.(now they will with NGW having just put cmh in there new catalog (listing as New LMFAO, we all here been using for 2 years)

 

[CTSV]

Before I put things on a mover... To bad there are not many colas...

 

[minds_I]

Hello all,

I wouldlove to read about the CMH yield comparisons.

Is the alledged superior resin production an indication that potency is greater? IF so, would this offset any alledged decrease in yield?

As I said, I have a cmh bulb and I found that it was leaving me wanting. Again this too could be grower/environmental/nurturing error.

I am going to install the bulb when the cold weather breaks as I like the lower temps the CMH gives me.

Anyway, Oz dude, chill brother....

minds_I

 

[TroubleGuy]

Wow, 169 pages. Sorry guys, just can't read it all right now.

Do they make 1,000w CMH lamps? Or (and probably not) would the 400w CMH work in a 1k HPS ballast? If I convert I'd want to be able to use my 1k digital ballast, and I've read that for the most part these bulbs can use existing ballasts. Seems like a worthwhile investment from everything I've read though.

 

[CTSV]

400w is as high as they go right now.

You have to use a 400w HPS ballast, I don't think a 1000 will work, might over load the bulb.