hillbil
Active member
New Boards and Bars are available for the cheap, replacing not need be expensive.I guess you are just lucky
CMH is definitely viable for plants.
-
ICMag with help from Landrace Warden and The Vault is running a NEW contest in November! You can check it here. Prizes are seeds & forum premium access. Come join in!
CMH vs LED vs HPS
- Thread starter Gerardbutler79
- Start date
CMH is definitely viable for plants.
hps...when u return by cold night , going whit close eye insaide the hps space it restore the body,sametime is hot too ,are real a big problem to swic for leds ? i buy two kit 400 same prize one led... if price going litle more down whitout return joking up 3wat chip ,maybe more think to use, that not cange some things.
Is anyone successful in using led with low humidity and lower temps? I am switching to cmh after 4-5 years of using led. The micro management of environment with led was getting to me.
Especially in veg with led I stunted to many plants when environment and light levels were incorrect. Been using cmh/hid to veg lately because of this. Also I hate ultrasonic humidifiers with a passion is there a better alternative?
Especially in veg with led I stunted to many plants when environment and light levels were incorrect. Been using cmh/hid to veg lately because of this. Also I hate ultrasonic humidifiers with a passion is there a better alternative?
Anyone has tried our smart lights? Do you have any suggestions for the smart light system? How it should be? Or what it will be? Feel free to share your idea.
Smart Grow System | Mars Hydro
Mars Hydro smart grow system lauched to start the fully automated cultivation, including smart LED grow lights, programmed ventilation, operation triggers, data logging and remote control via mobile devices.www.mars-hydro.com
You need to consult with growers before releasing your products. It’s a wasted opportunity otherwise creating subpar equipment that will not be completely automated
You're growing in a terrible environnent if it's only 11c without any heat from the lights. Maybe try to grow in better conditionsIn winter and in spring i find hids are the best way to produce anything.
Leds just dont work well for me in these low temperatures, everything slows down and all manner of issues pop up when it's 11 C outside and you are growing in an unheated/uninsulated environment.
I could mix led with hps/cmh but why bother when the extra heat is needed?
I could spend more $$$ on kingspan/celotex but why bother when the hids provide enough heat?
Leds work well in summer and can be welcomed when the extra heat hids pump out tip the grow room to well over 33 C but in the colder months, running hids at night means i dont need to insulate the grow tent.
Some programmable spectrums would be good. Maybe a program or two to replicate an autumn fade over the last few weeks of flowering by changing red/yellow/blue/green ratios etc.
Ganj on
exoticrobotic
Well-known member
Indeed.
It's pretty much uninsulated so remains almost as cold as outside but we grow where we can not where we want.
exoticrobotic
Well-known member
It's currently 11 C outside... but canopy temps are 27.5 C in the tent with 560 Watts of hids running.
What better conditions are there @kro-magnon?
If i ran leds with outside weather like that my canopy temps would be 16 C at best which would stall and lock out nutrients.
What better conditions are there @kro-magnon?
If i ran leds with outside weather like that my canopy temps would be 16 C at best which would stall and lock out nutrients.
Show me the 80 -90 %loss please ,
exoticrobotic
Well-known member
How do you want to define quality? For me it is what it does to my head.
How many cannabinoids do labs measure?
Total lab measured % cannabinoids and human perceived quality do not necessarily have a direct linear relationship.
i.e higher % concentrations do not indicate better quality.
The studies i've read show light spectrum to have quite an impact on cannabinoids. It has a major effect on various plant pathways. From the amount of CBGA seen in dried material to whether more cannabinoid acid or decarboxylated forms are observed in dried material.
I will happily smoke @snakedope and @hazyfontazy buds and report back on their quality
How many cannabinoids do labs measure?
Total lab measured % cannabinoids and human perceived quality do not necessarily have a direct linear relationship.
i.e higher % concentrations do not indicate better quality.
The studies i've read show light spectrum to have quite an impact on cannabinoids. It has a major effect on various plant pathways. From the amount of CBGA seen in dried material to whether more cannabinoid acid or decarboxylated forms are observed in dried material.
I will happily smoke @snakedope and @hazyfontazy buds and report back on their quality
Last edited:
greyfader
Well-known member
i'm just about to try an experiment in my current grow.
my take on the led grow light industry is that they are mostly producing compromised lights that are usable in both veg and flower.
we need one spectrum for veg and another for flower but a light built to do both would be more expensive.
i am vegging with 5000k leds only. i am almost ready to flower them. i will continue to use just the 5000k leds until the end of the second week of flower.
at that point, i'll switch to all 2700k leds supplemented with incandescents.
incandescents provide even more light in the dark red areas than a hps or cmh.
they also include far-red and infrared.
they are dirt cheap and although a19 type household bulbs are rapidly becoming unavailable there will be a market for a15 appliance bulbs.
these are designed for temperature extremes and are vibration resistant.
farm stores are still selling incandescent chick-hatching bulbs and will be for a long time.
below, the graph shows a 2700k white led superimposed with a tungsten incandescent.
here is the thread;
my take on the led grow light industry is that they are mostly producing compromised lights that are usable in both veg and flower.
we need one spectrum for veg and another for flower but a light built to do both would be more expensive.
i am vegging with 5000k leds only. i am almost ready to flower them. i will continue to use just the 5000k leds until the end of the second week of flower.
at that point, i'll switch to all 2700k leds supplemented with incandescents.
incandescents provide even more light in the dark red areas than a hps or cmh.
they also include far-red and infrared.
they are dirt cheap and although a19 type household bulbs are rapidly becoming unavailable there will be a market for a15 appliance bulbs.
these are designed for temperature extremes and are vibration resistant.
farm stores are still selling incandescent chick-hatching bulbs and will be for a long time.
below, the graph shows a 2700k white led superimposed with a tungsten incandescent.
here is the thread;
Blue Star OG pheno hunt, PPK style
hello, everybody! I am the grower formerly known as Delta9nxs. Welcome to a PPK style grow and pheno hunt of BlueStarseedco.com's new cross of Blue Star x Triangle Kush.
www.icmag.com
Attachments
exoticrobotic
Well-known member
Wow Incandescents. That takes me back to my very first grow with the blue incandescent 'grow lamps'
I got amazing quality but only 1/8 oz total from 3 plants
Nice experiment @greyfader. Best of luck with getting the best expression out of your plant.
I got amazing quality but only 1/8 oz total from 3 plants
Nice experiment @greyfader. Best of luck with getting the best expression out of your plant.
Having huge difference in temperatures between night and day Time of your plants is really bad for the quality of your flowers. With your bad growing conditions you're not in position to lecture other growers on quality.
exoticrobotic
Well-known member
27C during lights on (hids run at night), 20C during lights off (during daytime) is ideal for plant growth.
and I'm not trying to lecture anyone.
Chill geez
and I'm not trying to lecture anyone.
Chill geez
exoticrobotic
Well-known member
I know many that are killing it using LED. I use CMH/LED combo for other reasons that have nothing to do with quality. Remember changing the minds of everyone will never happen.
We will change our mind when we see actual results in smoke tests, not hype products that claim to do veg and flower and make coffee while they are at it.
The difference is the intensity of the source, essential oils will respond to higher intensity sources better (see the lavender oil test acoupke of pages back)
It's really a no brainer, if you fail to realize that 1 high intensity source will provide for them all (sun) then u are actually deny reality
HIDs have done us all good through the last 30+ years, LEDs have not proven themselves yet, not in the quality department anyway
Their whole concept goes against what we see in nature.
But I really do see why people love them for veg, they show amazing results all across their spread which is a game changer in large low watt spaces.
The difference is the intensity of the source, essential oils will respond to higher intensity sources better (see the lavender oil test acoupke of pages back)
It's really a no brainer, if you fail to realize that 1 high intensity source will provide for them all (sun) then u are actually deny reality
HIDs have done us all good through the last 30+ years, LEDs have not proven themselves yet, not in the quality department anyway
Their whole concept goes against what we see in nature.
But I really do see why people love them for veg, they show amazing results all across their spread which is a game changer in large low watt spaces.
Philips put out a halogen incandescent replacement at 70w. Longer lasting and more efficient with a similar spectrum - also cheap - if they’re still available where you are.
Last edited:
Don't forger I had an exeptional quality even in those conditionsThat's why i run hids at night...
ganj on
Your only gonna find it from small batch craft growers. If you haven't sampled any quality bud from LED it's not the light's fault lol.
