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whatissixbynine
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Hawk
Member
I want to use CMH but I want to use a digital ballast. I've got two 250w ballasts, one digital and one magnetic. The digital is better in every way except it won't run a CMH bulb (so I'm told). For now I'll just use the magnetic for CMH. But when are the ballast manufactures gonna start accommodating those that want digi's and CMH???
Anyway, anyone heard of GloGreen?-------->http://www.accendoelectronics.com/GloGreen-Digital-HID-Ballast-Fixture-Products.shtml
Their literature says their 250w digital ballast is compatible with MH, HPS, and CMH. And it operates 100w, 135w, 150w, 200w, and 250w bulbs.
http://www.accendoelectronics.com/PDF/GloGreenMulti250W-Digital-HID-Ballast.pdf
The 575w version runs 360w, 400w, 450w, and 575w bulbs. Again, they specifically mention CMH compatibility.
Anyway, anyone heard of GloGreen?-------->http://www.accendoelectronics.com/GloGreen-Digital-HID-Ballast-Fixture-Products.shtml
Their literature says their 250w digital ballast is compatible with MH, HPS, and CMH. And it operates 100w, 135w, 150w, 200w, and 250w bulbs.
http://www.accendoelectronics.com/PDF/GloGreenMulti250W-Digital-HID-Ballast.pdf
The 575w version runs 360w, 400w, 450w, and 575w bulbs. Again, they specifically mention CMH compatibility.
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Darth Fader
Member
All the technical stuff is way over my head, but could you recommend a bulb & ballast for a 3x3 grow tent?
250 watt HPS magnetic ballast & 250 watt CMH bulb...IMO...with dimpled reflector
isn't that low light?
you need at the least a 400, if not 2x 400's or a 400 and a 250. of just buy a 600 HPS
I would do a 400 and square down the size of the grow, and place the lamp more in a corner, instead of the middle
it's a small tent...it's gonna get hot and humid in there
Two 250's in a 22" x 52" x 8' closet, here. Temp and humidity have never been a problem. lol...It is my lack of skills that plague me!
Namaste, mess
Namaste, mess
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whatissixbynine
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I looked through about 30 pages and couldn't find the answer to this.. I'm interested in converting over to cmh in my dr240w (4x8) but need to find the answer to How does a 400 cmh compare to a 1000w hps for a 4x4 footprint. If I could get similar yields I would love to try it. Sorry if its been asked a million time before I couldn't find it
cheers!
cheers!
statusquo
Member
There is no way a 400W CMH will come anywhere close to a 1K watt HPS in any regard.
Thank you for the quick response. How about 2 of em? (2 400w cmh covering a 4x4 area?)
You might want to consider using a 400w CMH and 600w HPS together.
You might find this interesting.
This thread, post #3055
https://www.icmag.com/ic/showthread.php?t=72215&page=204
Namaste, mess
transplant
Member
Het anyone ran cmh on a 400 watt digi?
Castelvetro
Member
If i buy a 250 watt htg garden supply light kit then being thats its a magnetic ballast, all need to do is buy the cmh bulb and im up and running? im sure i need the bulb specs but this is all u need to make it work, just screw in an play?
Should be.
Some 400 users have had problems with HTGs weak ass ignitors which force them to shorten the cord between ballast and lamp. I don't know the 250s suffer from this. My 250 didn't.
Some 400 users have had problems with HTGs weak ass ignitors which force them to shorten the cord between ballast and lamp. I don't know the 250s suffer from this. My 250 didn't.
transplant
Member
move ignitors next to bulb!
move ignitors next to bulb!
I had same problem moved the ignitor next to reflector.
move ignitors next to bulb!
I had same problem moved the ignitor next to reflector.
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