CMH vs LED vs HPS

[madalasatori]

Combination of CMH and DE gavitas was good for me

 

[JKD]

Would be curious to see a grow with one of these:

ST3303 PRO 39 INCH 60 LED Light Bar

Introducing the all-new ST3303 PRO 29 Inch 60 LED.

www.stedi.com.au

Although I’m not keen to try it.
- Let me know how it goes.

 

[snakedope]

Looks like a veg monster...
I would def try it for vegging but it looks pricey
My stupid panels that I've used before are damn good at veg but have such a poor layout and construction... Need to reconfigure them into stripes somehow to let airflow better from bottom to top.. now it's just blocked by this ss metal sheet...
It's a 110k lm beast, never saw plants grow this crazy under no light but LEDs
In vegging, long hours, high run time, LEDs can't be beat, if you know what ur doing u will use LEDs in your grow.

 

[dimodz]

best its new strips or QB LeD in between CMH for more resin content at ladies from next Led

so that means LeD - CMH - LeD as combo

 

[cfl...KING]

There's a few growers on here that have partially swapped to led. I'd love to see lap tests comparing their hid vs led...

 

[dimodz]

There's a few growers on here that have partially swapped to led. I'd love to see lap tests comparing their hid vs led...

you doin`t needs lap test you can see it at results and weight too

 

[cfl...KING]

you doin`t needs lap test you can see it at results and weight too

Yes you do. I see amazing look bud for cheap because it's led bud that only lasts 30min an your rolling up again

 

[dimodz]

Yes you do. I see amazing look bud for cheap because it's led bud that only lasts 30min an your rolling up again

that depends at potency of cut or strain then and maybe you have already higher tolerance

 

[cfl...KING]

I have people lined up waiting for my hps grown bud because they all feel the same way about the local led bs bud. Before I harvest it's already gone. Which is why I'd love to see some of these well known growers have lab results of the same strain under led an hid. I highly doubt it's a coincidence. One person brought up led not fully maturing the THC, which does fit with the short lived high... Does led require a week longer flower to fully rippen the THC heads? Idk but from personal experience I've yet to not be let down by led grown bud. They work amazing in veg no doubt.

 

[dimodz]

check some pix from with Kushmints, Rosay and Sour Power - Hortilab cut out its made under leds.

time is same as HPS maybe some days less with LeD but you needs much more Cal/Mag nuts as with HPS

 

[snakedope]

Yes you do. I see amazing look bud for cheap because it's led bud that only lasts 30min an your rolling up again

We have touched this point at length in the BUD quality under LEDs thread..
Yes there is truth in what u say, I experienced the same.

that depends at potency of cut or strain then and maybe you have already higher tolerance

Most of the times, but there's more then meets the eye in this subject.

I have people lined up waiting for my hps grown bud because they all feel the same way about the local led bs bud. Before I harvest it's already gone. Which is why I'd love to see some of these well known growers have lab results of the same strain under led an hid. I highly doubt it's a coincidence. One person brought up led not fully maturing the THC, which does fit with the short lived high... Does led require a week long flower to fully rippen the THC heads? Idk but from personal experience I've yet to not be let down by led grown bud. They work axing in veg no doubt.

I held that notion, and I still hold it till this day.
I had amazing results in veg with LEDs
And I will always say it, I'm not rooting for this light source or that, I'm saying what I've seen from my own grows and the data they give us
LEDs can't be beat in veg, it's just a no brainer
For flowering I will never use them until they bring the diodes above high intensity threshold
They have time.

 

[cfl...KING]

check some pix from with Kushmints, Rosay and Sour Power - Hortilab cut out its made under leds.

time is same as HPS maybe some days less with LeD but you needs much more Cal/Mag nuts as with HPS

Comparing pics.. I'm all set have a good day

 

[snakedope]

Some genetics do alright under LEDs, I can't really explain why, I planted 10 blue cheese / 10 wedding cake from barney's and all of them were hairy trichs, almost no effect no smell and very low glue
From them 1 was out of the ordinary, it had smell, flavour, glue..
So I dunno, my only thought about this is genetics plays a huge role
Everything is not conclusive that's the hard part, I wish I would've grown the same seeds under HPS for even slight kind of reference, clones would be a better side by side experience, but my mind is not letting me sacrifice time on flowering plants under LEDs
But I do know to say the truth when it should be told, I'm dying to change my 1200w hps setup back to my LEDs in veg
20 hours of 1200w, blowers, ac, a lot of heat... Hps is not practical in hot regions
But in 12/12 you must handle the heat and place your HIDs back

 

[linde]

LED vs HID is similar to the vacuum tube vs solid state transfer back in the 60s. Everybody liked solid state at first for the light weight and less heat, less parts and quickness. But later on people realized that vacuum tube technology was far superior quality than the new solid state technology. Heck all of my guitar amps still use vacuum tubes. An ancient technology that solid state just cannot touch to this day. For budding I will stick with my old HPS technology.

 

[JKD]

For flowering I will never use them until they bring the diodes above high intensity threshold
They have time.

That LED I posted uses 60 x CREE XPL Hi-Intensity 10w diodes for a peak intensity of 919,681 candela. It’s not a ‘grow light’ though. Still measures 1 lux at 153 metres.

 

[zachrockbadenof]

LED vs HID is similar to the vacuum tube vs solid state transfer back in the 60s. Everybody liked solid state at first for the light weight and less heat, less parts and quickness. But later on people realized that vacuum tube technology was far superior quality than the new solid state technology. Heck all of my guitar amps still use vacuum tubes. An ancient technology that solid state just cannot touch to this day. For budding I will stick with my old HPS technology.

i am about to cut down my 1st grow under a mars fce8000 in a 5x5ft tent- i have been running the lite at about 70pct - the plants are in 3gallon fabric pots, and one thing is for certain... the buds are way smaller then the last grow under '2' 315 cmh's, and look like popcorn compared to when we were using '4' 1000watter mh/hps (in a larger room)... at the end for me, its quality, so in some weeks after a dry and cure we will see...

 

[kro-magnon]

What LED are you running

I have a Lumatek Zeus 465w/2,9, the most recent version of their line, it's my first cycle with it.

 

[kro-magnon]

high temperature is important under LED, i recommend around 28-30 °c when light on. You could suck warm air via tube from a heater/radiator

That's really high temps to get in winter, it's the first time someone mentions the need of so much heat with LED can you elaborate ?

 

[ratatouille]

That's really high temps to get in winter, it's the first time someone mentions the need of so much heat with LED can you elaborate ?

In my experience everything just grows better at this temperatueres under LED, if you go with like 24 C you also have to feed way less otherwise you get problems with overfeed. Im not saying its not possible to get good crop with lower temps, in last weeks I also reduce temperature. But in my opinion you get better results with higher temps, mainly because LED dont have that much waste heat. Also I use selfmade organic soil, the microbes etc. work way faster with higher temps, look up van-’t-Hoff’sche Rule.

 

[snakedope]

Science says 25c is where the growth line starts in terms of high production environment, 30c is the most optimal but hard to maintain for 12 or 20 hours with the right humidity...
So anywhere between your good.

That LED I posted uses 60 x CREE XPL Hi-Intensity 10w diodes for a peak intensity of 919,681 candela. It’s not a ‘grow light’ though. Still measures 1 lux at 153 metres.

What is the lm output of each diode ?
It does look good.