All BS set aside CMH yields

is it true or not


  • Total voters
    118

GroErr

Well-Known Member
Growershouse. Com ship to canada from my look threw their checkout process, says available for in store pickup

Thanks guys-no gavita for this tent indeed.
i have a/c in my house... house sits @21 ambiant in winter
Growershouse is probably your best bet for the 315's, I've looked around for them in Canada and best price I could get up here was $700 CAD. For COBs there's a company in BC using Cree 3590's with decent pricing, probably even cheaper than DIY kits out of the US.
http://www.bcblondes.com
 

since1991

Well-Known Member
Here's an update. Week 6. Blue city diesel and blue dream. Vegged and flowered under the same lights their whole lives. I do veg with the 4200k bulb though. 5 630 Dimlux on the Dimlux maxi controller.
Hey ganja...did you ever use that same room with Hps de lamps? And if so what total wattage did you have? Looks damn nice...any lamp.
 

ganja361

Well-Known Member
Hey ganja...did you ever use that same room with Hps de lamps? And if so what total wattage did you have? Looks damn nice...any lamp.
I haven't. But next crop I plan on putting a row of 3 of them down the middle of the room to see if they really make that much difference in yield. Luckily I have 36000btu so I can play around with that.
 

since1991

Well-Known Member
So lec lamps whether 315 or 630 fixtures still kick out heat...of course. But would you say in comparable wattage to single ended (non air cooled) or double ended HPS that the heat load is much less?
 

ganja361

Well-Known Member
So lec lamps whether 315 or 630 fixtures still kick out heat...of course. But would you say in comparable wattage to single ended (non air cooled) or double ended HPS that the heat load is much less?
By far. On average a 630 LEC only needs 2200 btu. Gavita claims it's units only need 4000 but it's closer to 5000. You could get away with running a portable AC in a small room for 2 lights. They are no LEDs but still cooler than anything else I've run by a lot. In veg I run them at 60% the room never gets warm. Running the 5 I have now at 10% overdrive and having no problem cranking it down to 50 degrees if I wanted.
 

pinner420

Well-Known Member
So lec lamps whether 315 or 630 fixtures still kick out heat...of course. But would you say in comparable wattage to single ended (non air cooled) or double ended HPS that the heat load is much less?
Keep a couple bigger bulbs around to add heat in the winter. Don't have a laser therm however to the hand I would say by wattage standards a 315 feels half as cool as a 600.
 

ganja361

Well-Known Member
The really nice thing about ceramics is they are so good at bringing out colors and terpenes you don't have to cool the room to bring the traits out. I ran C02 until week 6 and 85 degrees and I had colas so purple they were turning black. After I turned the gas off I'm running 75 lights on and 65 lights off. It's been getting cold in Portland so even have turn the heat pump on sometimes.
 

since1991

Well-Known Member
The really nice thing about ceramics is they are so good at bringing out colors and terpenes you don't have to cool the room to bring the traits out. I ran C02 until week 6 and 85 degrees and I had colas so purple they were turning black. After I turned the gas off I'm running 75 lights on and 65 lights off. It's been getting cold in Portland so even have turn the heat pump on sometimes.
Iam in Michigan. Freezing cold outside this time of year. I have a louvered intake that i strictly use for this time of year. I shut off my mini split the whole winter. I thought it crazy to run the room with the split on these months when its 25 degrees or lower outside. Saves me bucks. I have a six inch inline blower hooked to a simple themostat hooked to the louvered duct flap. Keeps it just as cool as the split...virtually no money spent. But anyways...sounds like a bunch of lec 's are going to replace my Gavitas...soon....real soon. It makes so much sense. And really..the whole hps spectrum from the very beginning was meant for fruiting crops in a greenhouse. Where the blues of the sun was plenty and the reds needed supplement. Makes sense that people are seeing improved crop quality totally indoors with lec spectrum. We used hps all these years because thats what we were told first off. All we had second (besides mh). And thats what gave us plump buds. But the whole hps spectrum was never ideal for the only light source.
 
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ganja361

Well-Known Member
Iam in Michigan. Freezing cold outside this time of year. I have a louvered intake that i strictly use for this time of year. I shut off my mini split the whole winter. I thought it crazy to run the room with the split on these months when its 25 degrees or lower outside. Saves me bucks. I have a six inch inline blower hooked to a simple themostat hooked to the louvered duct flap. Keeps it just as cool as the split...virtually no money spent.
I would too but I like to keep my room sealed. Plus you have to if you're running c02. Or at least to best of your ability. Unless you like refilling tanks everyday.
 

since1991

Well-Known Member
I would too but I like to keep my room sealed. Plus you have to if you're running c02. Or at least to best of your ability. Unless you like refilling tanks everyday.
I do use more co2 with the cold air intake in winter...but not by much. The intake louver opens up but sporadically. It drops the temp quick..then closes back up. I lose some co2 but its negligible at best. And worth it to not have the split running..throwing cash to the man every month.
 

Chillums

Well-Known Member
Sorry to revive an old thread, just thought someone might be interested in my experiment. I wanted to know if I could run cmh's on standard high frequency electronic ballasts as there wasn't sufficient information out there pertaining to that.

Background:
-2x3x5
-2x400w hps
-wing reflector
-air cooled glass diy enclosed top
-adjustable ballasts run at 300w(for 315 cmh)

Lights ran without issue for two days. Then on the third day, as I was in the next room watching tv; all lights, tv, stereo all shut off for roughly five seconds before powering back on. I immediately checked the box and found the lights off. Everything else had turned on and worked fine except the lights in the flower box. After checking all breakers, fuses, panels and connections I switched the cmh bulbs for the hps; fired up no problem. The cmh bulbs are intact without any apparent alteration and no breakers blew there having been four between bulbs and main power. So I am inclined to believe the bulbs overheated emitted an EMP temporarily shutting off power to the rest of my house without damaging anything.
Thoughts?
 

Kushman077

New Member
Here's an update. Week 6. Blue city diesel and blue dream. Vegged and flowered under the same lights their whole lives. I do veg with the 4200k bulb though. 5 630 Dimlux on the Dimlux maxi controller.
Did you ever get a chance to record your harvest results??
 
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Bad Karma

Well-Known Member
Sorry to revive an old thread, just thought someone might be interested in my experiment. I wanted to know if I could run cmh's on standard high frequency electronic ballasts as there wasn't sufficient information out there pertaining to that.

Background:
-2x3x5
-2x400w hps
-wing reflector
-air cooled glass diy enclosed top
-adjustable ballasts run at 300w(for 315 cmh)

Lights ran without issue for two days. Then on the third day, as I was in the next room watching tv; all lights, tv, stereo all shut off for roughly five seconds before powering back on. I immediately checked the box and found the lights off. Everything else had turned on and worked fine except the lights in the flower box. After checking all breakers, fuses, panels and connections I switched the cmh bulbs for the hps; fired up no problem. The cmh bulbs are intact without any apparent alteration and no breakers blew there having been four between bulbs and main power. So I am inclined to believe the bulbs overheated emitted an EMP temporarily shutting off power to the rest of my house without damaging anything.
Thoughts?
I have all square wave ballast LEC's. When there is a black out/brown out/power failure in my neighborhood it takes the lights 20-30 minutes to comeback on line. I'm not sure if it's part of the design of the bulb, or the ballast, but LEC light will not strike when hot, thus the built in cool down period. I wasn't sure if you were aware of that, or not, so I thought it was worth mentioning.
 

ganja361

Well-Known Member
I have all square wave ballast LEC's. When there is a black out/brown out/power failure in my neighborhood it takes the lights 20-30 minutes to comeback on line. I'm not sure if it's part of the design of the bulb, or the ballast, but LEC light will not strike when hot, thus the built in cool down period. I wasn't sure if you were aware of that, or not, so I thought it was worth mentioning.
It's the ballast. New technology to save the bulb. That's why the good ballasts simulate a sunrise so to slowly warm the bulb.
 

MMJ Dreaming 99

Well-Known Member
hello my fellow growers. i see evryone is catching on to the de cmh 630w. no you cannot use a regular ballast like the gavita the major reason being that it is a high frequency ballast and can be very dangerous if used with these bulbs. you must use a low frequency ballast. i currently have the real deal double ended cmh 630w 3000k R with the only legit low frequency digital ballast i have the 700w and we are developing the only 1000w cmh ballast but there currently is no bulb for it. they make an 830W cmh but it is not double ended but we will have the de 860 soon. i have the whole system at an incredible price compared to anyone out there who are likely selling you a bullshit ballast. contact me by email if you want to know where to get these beasts. we will be hitting up all the grow shows with these lights starting in july in sanfrancisco. these lights are the real deal with same yield as a gavita 1000w hps using 30% less electricity and up to 40% cooler which means no hot spots for all you garage and basement growers with low cieling!! yes i know its a dream come true thank you thank you. but seriously anyone who wants to grow the best with a full spectrum and not get killed by ur electric bill while being better for the enviornment then you dont want to miss out on these bad boys. and dont get me started on the low frequency ballasts we have the prretiest things youve ever seen. what is low frequency? how about constant power with no spikes and no interference from the outside world, this translates to healthier greener denser more oily plants!!!! have a nice day and dont waste time and reach out to me and dont be fooled by the other brands out there pushing cmh with hf ballast and shittty bulbs. we have the real deal not in stores yet. only private clients throwing up two hundred light rooms!! for more info 305_298-7725
PM me bro.
 
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