Ceramic Metal Halide (CMH)

[rives]

The standard Elite T9 930 is an architectural bulb with a pretty good warm white spectrum. The reason that I am using them is that I bought a case of them for a killer price when the 315 gear first started showing up in the US. The Agro is optimized for agricultural use, and has an improved spectrum. I picked up one to try out and see if the hype was true, and while I haven't done a side-by-side, I did do a grow on a strain that I had run the T9 on before and it looks like the Agro probably yields somewhere around 5-10% better than the T9.

The T9 is single-jacketed, so it should only be used in enclosed fixtures. The Agro is a T12, double-jacketed, and can be run open or bare-bulb. I run enclosed hoods, the Bell 600w models, and they actually run cooler than the LED fixtures that I was using before.

The Advanced Tech stuff is probably a good way to get into it, but they only come with the mogul-base 4K (940) version of the lamp and it is not an Agro lamp. At $220 for their package, vs $185 for the ballast and PGZ18 socket from the above link, I would go with the separate pieces. An Agro PGZ18 lamp can be had for around $80, so there is roughly a $40 swing between the two. If you went with the Advanced offering and decided in the future that you wanted to try the other, the socket would have to be changed out anyway. YMMV.

Remember, these are 240v ballasts so you will need to be able to run that voltage or set a transformer to feed the ballasts.

 

[Luther Burbank]

Yeah, taking the step-up converter into consideration. Good food for thought. I'll probably go for the Agro then if I decide to go with these bulbs. I got real exhausted by the reflector game when I was indoors before, so I've been considering running bare bulb vert, but I'm wondering if I shouldn't look into cooltubes if I'm running two 315s in an enclosed 4x4.

 

[cannaisok]

My friends Plant grew INTO the t12 930elite. he was on holiday and when he came back i saw his plant absolutely dry grown around/into the bulb. No fire, no damage to the bulb. 930 t12 is great! its the 210w version. He´s happy with it!

 

[cannaisok]

what would you say about combinating a 180w led light with the 210/930? How would you guys set it up or is it just stupid because of the totaly different depth of penetration and so on..? my friend has both, the (180-200)w Bysen led and the 210/930elite. We are wondering if there is a way to combine them in a smart way. Maybe you guys tried something like this before? What i can say is that both lights are able to produce more than 0.5gpw in 3months under suboptimal conditions from seed. so with clones and the right amount of plants and fresh air and more wind.. id say 0.8is no problem at all after 1-2grows... question is shall my friend sell one of these lights because they dont work together, or keep. he is anxious about running both for experiment because he might ending up with too many plants and not enough light...
peace

 

[D1904]

True or False.

315 CDM produce leafy buds?
HPS produces bigger calyxes, but less leaf and resin?

 

[Jhhnn]

what would you say about combinating a 180w led light with the 210/930? How would you guys set it up or is it just stupid because of the totaly different depth of penetration and so on..? my friend has both, the (180-200)w Bysen led and the 210/930elite. We are wondering if there is a way to combine them in a smart way. Maybe you guys tried something like this before? What i can say is that both lights are able to produce more than 0.5gpw in 3months under suboptimal conditions from seed. so with clones and the right amount of plants and fresh air and more wind.. id say 0.8is no problem at all after 1-2grows... question is shall my friend sell one of these lights because they dont work together, or keep. he is anxious about running both for experiment because he might ending up with too many plants and not enough light...
peace

I see no reason they won't work together. Growth might be different on one side of the space from the other, but plants or lights can be moved occasionally to compensate if you want.

 

[Ttystikk]

I'm seeing better growth from my Plantmax HPS thouies than I am from my 860W CDM lamps- same ballast, room, configuration, etc.

Who else has done a side by side/head to head with them?

 

[Drek]

Pics? Plantmax is at 140,000 lumens, CDM860 is at 82,000; should be a bit bigger. Par rating is higher on Plant max.
Some interesting questions. How much difference in weight will we see in the end, due to the difference in PAR vs how much power used? Will there be any quality differences in the smoke? Which plants look better/healthier in the end?

 

[Seaf0ur]

Dont the HPS bulbs degrade faster?

 

[LargePrime]

plantmax is straight up lies. no hps bulb gets 140l/watt. the best lab ones get 130. and only at lower wattages.
if you are getting better results with hps,great. i doont know anyone else who is.

Pics? Plantmax is at 140,000 lumens, CDM860 is at 82,000; should be a bit bigger. Par rating is higher on Plant max.
Some interesting questions. How much difference in weight will we see in the end, due to the difference in PAR vs how much power used? Will there be any quality differences in the smoke? Which plants look better/healthier in the end?

 

[liagro]

plantmax is straight up lies. no hps bulb gets 140l/watt. the best lab ones get 130. and only at lower wattages.
if you are getting better results with hps,great. i doont know anyone else who is.

@Largeprime sorry that i have to correct you but all double ended 1000w 2100 µmol/s HPS bulbs produce about 155.000 to 160.000 lumens at 1000W lamp power.

 

[Drek]

plantmax is straight up lies. no hps bulb gets 140l/watt. the best lab ones get 130. and only at lower wattages.if you are getting better results with hps,great. i doont know anyone else who is.

I ain't using HPS, but the guy on the other page is. I'm a MH dude, all the way.

(...except for maybe the Philips DE bulbs)

 

[DrFever]

Luther, I'm assuming that you mean (2) 315's and not two 360's, and that I'm not answering the wrong question!

I used (2) 315 T9 930's in my last Tsi Fly run, in a 4x4 tent (39w sq/ft). I only had 5 plants ready to go and to fully optimize the space, I could have run 4 more without having crowded them down very much. Even without filling the tent completely, I pulled .95 GPW.

If you can fit them in there, 3 of them would undoubtedly be even better but probably not necessary. The prices up above in Fruitbat's post #6544 are among the best that I've seen for retail pieces, but I would go with the Agro lamp rather than the standard 930.

More pictures in album -

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630 watts and you got???? lets round it off 600 dry grams you work for CMH ( sales man or something ) to bad there is no of pics with something ... pop can 2 liter bottle , a lighter beside the buds , considering to get 600 dry grams your going to need 4 times that wet 2400 grams or 5.28 pounds wet ?? or to put it more into perspective one area of screen drying ends up being a pound dry sometimes oz to 2 oz more but closer to a pound and there is no way that them 5 plants would ever fill a door screen to even come close to a pound Rives come closer to your screen i want to slap you

this thread has been going on for a long time wish there were more posts on flowering girls from others and there true results so other people can truly judge IMO like post someones post above mentioned 2 315 watt is just that 630 watts

is it better then comparing it to a 600 watt HPS well you be the judge here is a 4 plant grow courtesy of third coast
600 watt 40 ounces or 1.86 gpw. 4 plants in 3.5 gallons of coco hand watered once a day. Strain is Red Headed Stranger. Williams Wonder x Tom Hill Haze.

Anyways

 

[rives]

What an idiot. Go back to trolling the LED threads.

 

[the gnome]

is it better then comparing it to a 600 watt HPS

well you be the judge here

is a 4 plant grow courtesy of third coast
600 watt 40 ounces or 1.86 gpw. 4 plants in 3.5 gallons of coco hand watered once a day. Strain is Red Headed Stranger. Williams Wonder x Tom Hill Haze.

Anyways

lol, another pearl of il-logic from*nurse hotflash*
I can't think of a more flawed comparison other than the afternoon soap opera TV ads showing 2 cleaning detergents,
1st brand IS--> sooper dooper cleanser
the other cleanser IS---> brand X
watch in time lapse as they scrub away, side x side
and poor brand X just can't clean the dirt off
BUT!!
sooper dooper melts the dirt in front of your eyes...

I mean really,
I've grown a strain that gave me nugs the size of of my BT 56 halide bulb that weighs 1/2oz
and another strain with a bud half the size weigh twice as much.
with 2 strains you can get wildly different results
OR
veg a plant 2 wks and another 6wks and guess which produces a higher GPW?
and the variables that affect yield keep going on and on with the bulb being only a part of the equation.

since you asked me to "be the judge here"
that kind of comparison is pure BS

 

[Jhhnn]

Def agree about GPW being a semi-bogus metric. Grams per kilowatt/hour would be a lot more meaningful.

As you say, Gnome, there are a helluva lot more variables than just the lamp, as well.

 

[e_24]

have a quick question about space and lighting with these babies. I purchased a 2x4 foot tent, and was thinking about running my 330w allstart, but after looking at advancedtech's website, they also have a 205w version as well. I am now in the process of finding two pulse start 250w ballasts and run two 205w side by side in my 2x4.

any thoughts on the 205w version?

 

[Drek]

205w TG puts out a nice amount of UVB. Be nice if they came in a lower color temperature.. ~3500k.

http://download.p4c.philips.com/l4b/9/928601167901_na/928601167901_na_pss_aenaa.pdf

 

[e_24]

Well I still like the dual bulb setups, ad wouldn't be opposed to running an hps in one of the sockets. Would that be better?

 

[unilukkari]

Looking for 50-150W CMH for micro grow in europe. Any help where to look?