Sire Killem All
Well-Known Member
So my wife jus got me my x- Mas gift....
Asked if I like it then said, jus 9 more days...lol
Asked if I like it then said, jus 9 more days...lol
CMH Throwdown.
- Thread starter Sire Killem All
- Start date
Evil-Mobo
Well-Known Member
Looking good. The pic is blurry what is that from Feminised seeds? I have one of their strains on hand for future growing myself the OG Kush
Sire Killem All
Well-Known Member
30 of the "Hula Haze"
Evil-Mobo
Well-Known Member
Awesome good luck brother can't wait to see it. You going to continue that grow here or start a new log?
Sire Killem All
Well-Known Member
Unless I make major changes I'll just keep posting here. Hope this one I can follow more closely , but I never been good at details....
growin-Jables
Well-Known Member
Actually these CMH 630w are fairly cool. Temps in my 4x4 are 75 degree with just two small 4" inline fans. One intake one exhaust.
growin-Jables
Well-Known Member
Here in oregon its about 12c per kwh. I think hawaii is probably by far the most expensive . So hey how high do you hang your 630w cmh from canopy. I don't want to put to close and bleach the tops. I have set to abouy 20-22 inches
Sire Killem All
Well-Known Member
I had overlapping lights so I kept them around 28-30", did u put in the little slide in pieces? I took mine out, felt like it help with light spread .
growin-Jables
Well-Known Member
Yeah i left the slide in plates to see how well they work. I think it helps concentrate the light spread diagnolly downward. All that space between the fixture and tops of canopy has strong light that misses all the plant tops and goes straight into the wall of the tent. I think those slide in pieces help direct that light downward towards the plants giving it less of a 90 degree spread of that makes sense. Think there more ideal in tent grows where your not needing as large of spread as open room or overlapping fixtures
growin-Jables
Well-Known Member
I also think that those slide in plates help protect wind draft from hitting the lamps . I read they can't have any air blowing onto them or it makes them less efficient . Maybe I'm wrong lol. But for now I'm going to try and leave them in
Sire Killem All
Well-Known Member
Double ended don't like being cooled. Cmh don't mind at all
growin-Jables
Well-Known Member
Really?? Interesting . I could of sworn that the cmh bulbs use the heat in the lamp to produce its intensity and when air is blown onto them they cool down and lose intensity. Or am I confusing that with double ended
PSUAGRO.
Well-Known Member
yes, arcs shouldn't be directly cooled, doesn't matter if se or de ............passing well maintained grow room / ambient temps over the bulbs is negligible on output imo, pulling artic outdoor air over them could be a problem. also dust and dirt accumulation on the glass/bulbs with cooltubes robs valuable photons.
Paper Hat Guy
Member
i know this is a shit noob question, but please read and provide input! I'm new to CMH (just got today). I inserted the light into the socket-like orifice and noticed it was a bit loose, but couldnt manage to tighten any further. I switched the light on and everythign was good for a minute or so. then it immediately went out when i was adjusting the light. I'm now thinking its not fully in the socket. Is the light fucked? I put the appropriate pins in holes. My issue is the sticker on the bulb says never turn it off within two minutes. DO I have to buy another bulb? i know im an idiot. and new to this forum.
Sire Killem All
Well-Known Member
It just will shorten the life span of lamp. Check all ur connection, lamp ballast, hood. Sometime the lamp seems it turned it but needs a little more.
growin-Jables
Well-Known Member
If It turned off and you tried to turn it right back on it will just not fire properly. You need to leave the ballast unplugged for about 5 or 10 mins. Then try again and don't touch the light this time when it is turned on. It probably lost contact on the pins and these cmh's cant be kicked off then right back on. What cmh unit do you have ? What bulbs ?