• Home
  • Forums
  • Medical Cannabis Cultivation
  • Advanced Techniques & Problems
  • HALP! CMH lights- what is going on?

HALP! CMH lights- what is going on?

  • Thread starter Thread starter Thetinman
  • Start date Start date Mar 19, 2021
  • Tagged users Tagged users None

HALP! CMH lights- what is going on?

Thetinman Mar 19, 2021 293 Replies 22,203 Views
Page 3 of 15 · Replies 41–60 of 294
Prev
  • 1
  • 2
  • 3
  • 4
  • 5
  • …
  • 15
Next
First Prev 3 of 15 Next Last

Thetinman

Posts
268
Reactions
92
Joined
Mar 16, 2021
Points
28
Mar 22, 2021
#41
But those lights I described are not halogen. They are 12volt bulbs. So if you are using the same, try white back reflection. Epoxy white resins were used under copper tops. Bulb underneath reflecting down. If I am not mistaken, like 25watt bulbs.
Go and buy a cheap low voltage light transformer. Others are a bit harsh on bulbs, they do lose their pattern of rainbow, so might want to change out every so often. But again if I didnt see it, I would not have believed it.... saw it.

T
 
Quote Reply

Madbud

Posts
3,906
Reactions
7,416
Joined
Jul 15, 2017
Points
263
Mar 22, 2021
#42
Thetinman said:
Jesus! That's not florescent, that halogen. I installed the same stuff when I was a contractor. For outdoor lights... That works? But I will say,

There was a customer that wanted the full boat. We installed the copper sidewalk lights in flower beds. They grew like MAD! Might be that it extended daylight hours of absorption... ?
Click to expand...
Not halogen, they are metal halide arc lamps, like 40w bulbs. Super hot and bright and expensive. In the day it was these and sodium for flower. The flourescents i recently used were simple shoplight fixtures, cool and efficient, and i may go back to them if i don’t like led, or if i need heat, spark up an arclight.
 
Quote Reply

Ryboburton

Posts
407
Reactions
603
Joined
Feb 29, 2020
Points
93
Mar 22, 2021
#43
If you’re growing under true cmh or lec bulbs two 315 watt lights is way too much for them. I flower a 4x4 room under two of those and it’s all they can handle.
 
Quote Reply

Thetinman

Posts
268
Reactions
92
Joined
Mar 16, 2021
Points
28
Mar 22, 2021
#44
Looks like I am going to black plastic the whole room from 8' to bottom. This is to remove all shinyness to them..

Yes I have a room, so its kinda wide open. What I am saying is darken all sides (with your 315) in your tent. You will see amazing differences bro. Try it.
This is a commitment into understanding CMH lights. I would never use 2 in a tent, nor a 630! Just way too much. But zero reflection makes a world of difference in a green way.
 
Quote Reply

Ryboburton

Posts
407
Reactions
603
Joined
Feb 29, 2020
Points
93
Mar 22, 2021
#45
I don’t use a tent I use a box. But they bud nicely
 

Attachments

  • 66C706F1-BCDB-4600-95B9-1EEDEA7F47D7.jpeg
    634.6 KB · Views: 107
  • A771A28D-9194-4FD7-978B-89C14FFFD9AE.jpeg
    793.1 KB · Views: 112
Quote Reply

Thetinman

Posts
268
Reactions
92
Joined
Mar 16, 2021
Points
28
Mar 22, 2021
#46
YOU blackened out your sides! Ah that's the trick isn't it....? To using cmh...
Zero reflection...
 
Quote Reply

Ryboburton

Posts
407
Reactions
603
Joined
Feb 29, 2020
Points
93
Mar 22, 2021
#47
No just a shitty picture. It’s all made of stainless steel. Current fifth gen clones one week before flip. Currently under one 315 sunsystem. I’ll put in the second the day I flip them
 

Attachments

  • C1269E8D-798B-43AF-A424-7CD393052161.jpeg
    653.8 KB · Views: 110
  • 652DFB19-BCC7-4B6D-B81B-160DE6E57A9E.jpeg
    658.7 KB · Views: 100
  • C3C9D714-B654-41FF-818F-9AC08D39934F.jpeg
    723.7 KB · Views: 114
  • 81BB4511-8CBB-41F5-ADA3-938ECFF3015C.jpeg
    765.5 KB · Views: 96
Reactions: DankNugz420
Quote Reply

Ryboburton

Posts
407
Reactions
603
Joined
Feb 29, 2020
Points
93
Mar 22, 2021
#48
Seven plants in a 4x4 area. I clone and semi veg in a closet but I take my clones at like two inches tall. Space But I always net close to two lbs off 7 plants
 
Quote Reply

Thetinman

Posts
268
Reactions
92
Joined
Mar 16, 2021
Points
28
Mar 22, 2021
#49
Dude! Try overlay with home Depot black plastic. Up to light, down to bottom. If shiny bottom, black plastic there also. I may double your output...
 
Quote Reply

Thetinman

Posts
268
Reactions
92
Joined
Mar 16, 2021
Points
28
Mar 22, 2021
#50
You...your not GOING TO BELIEVE THE GREEN DUDE!!!
 
Quote Reply

Ryboburton

Posts
407
Reactions
603
Joined
Feb 29, 2020
Points
93
Mar 22, 2021
#51
Thetinman said:
Dude! Try overlay with home Depot black plastic. Up to light, down to bottom. If shiny bottom, black plastic there also. I may double your output...
Click to expand...
Show me a pic. I’d love to know why
 
Quote Reply

Thetinman

Posts
268
Reactions
92
Joined
Mar 16, 2021
Points
28
Mar 22, 2021
#52
Standby waiting for them to wake up. In about a half an hour. But it is that easy. Try it, it's small enough, hell I got acreage here! Haha!
 
Quote Reply

Ryboburton

Posts
407
Reactions
603
Joined
Feb 29, 2020
Points
93
Mar 22, 2021
#53
I’d have made the box out of black metal if u can prove your point. I use those lights and love them. The bulbs last forever they aren’t hot and I get fantastic results
 

Attachments

  • 98B7CCA2-B0D4-460B-A106-5B2E2933B677.png
    8 MB · Views: 117
  • 9052CD87-4F54-4872-B219-D49975BB745B.png
    7.9 MB · Views: 116
Reactions: Learnerlistner
Quote Reply

Thetinman

Posts
268
Reactions
92
Joined
Mar 16, 2021
Points
28
Mar 22, 2021
#54
What I am saying is, IT REMOVES ALL YELLOWING! You got flat boards, easy tape job for experiment, you will find that lowering will remove stretching also. Use the bulb and its reflector only.
 
Quote Reply

Thetinman

Posts
268
Reactions
92
Joined
Mar 16, 2021
Points
28
Mar 22, 2021
#55
Yes! There it is, perfect timing. Just flat black out sides, plastic will do. It takes out ALL YELLOWING!
 
Quote Reply

Ryboburton

Posts
407
Reactions
603
Joined
Feb 29, 2020
Points
93
Mar 22, 2021
#56
Like I said. Let me see some pics
 
Quote Reply

Madbud

Posts
3,906
Reactions
7,416
Joined
Jul 15, 2017
Points
263
Mar 22, 2021
#57
Glad that worked out for ya
 
Quote Reply

Thetinman

Posts
268
Reactions
92
Joined
Mar 16, 2021
Points
28
Mar 23, 2021
#58
Goto CMH lights, what's the deal. Another thread and check them out...
 
Quote Reply

Thetinman

Posts
268
Reactions
92
Joined
Mar 16, 2021
Points
28
Mar 23, 2021
#59
Thanks madbud, ryboburton has such a small area to do. You would see immediately the results, no change, yank em...
 
Quote Reply

Thetinman

Posts
268
Reactions
92
Joined
Mar 16, 2021
Points
28
Mar 23, 2021
#60
Here are some...
 

Attachments

  • IMG_20210322_144100.jpg
    449.7 KB · Views: 105
  • IMG_20210322_144050.jpg
    486 KB · Views: 99
  • IMG_20210322_144100.jpg
    449.7 KB · Views: 94
  • IMG_20210322_144033.jpg
    561.8 KB · Views: 104
  • IMG_20210321_152207.jpg
    475.1 KB · Views: 82
  • IMG_20210321_152203.jpg
    430.3 KB · Views: 99
Quote Reply
Page 3 of 15 · Replies 41–60 of 294
Prev
  • 1
  • 2
  • 3
  • 4
  • 5
  • …
  • 15
Next
First Prev 3 of 15 Next Last

Thread info

Replies 293
Views 22,203
Started Mar 19, 2021
Latest post Apr 14, 2021
Starter Thetinman
Forum Advanced Techniques & Problems

Latest posts

  • 2026 Outdoor Grows! let's see em!
    • Latest: Leste
    • 15 minutes ago
    General Outdoor Growing
  • First Outdoor Grow In Colombia
    • Latest: StoneyGymRat
    • 17 minutes ago
    General Outdoor Growing
  • LB in the Lungroom Reboot
    • Latest: Lockebox
    • 50 minutes ago
    Grow Diaries
  • Grayoldnprouds chant of the ever circling Skeletal Family.
    • Latest: grayoldnproud
    • 58 minutes ago
    Grow Diaries
  • Growing outdoors from seed in high desert Southern New Mexico
    • Latest: kattitude63
    • 59 minutes ago
    Grow Diaries
  • Home
  • Forums
  • Medical Cannabis Cultivation
  • Advanced Techniques & Problems
  • HALP! CMH lights- what is going on?
  • Contact us
  • Terms and rules
  • Privacy policy
  • Help
  • Home
Community platform by XenForo® © 2010-2026 XenForo Ltd.
Menu
Log in

Sign up

  • Home
  • News
  • Classifieds
  • Forums
    • What's new Featured content New posts New Articles New articles New products Latest activity
  • Social
  • Strains
  • Live
  • Learn
  • Brands
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?