Discussion about LED diodes

[f-e]

With the diodes being very much less than one watt each, the canopy penetration will be minimal. That's what you get with low power diodes. A professional grade LED ($$$) would have purpling all the way down.

Professional like the 0.2w LM301 perhaps? Smaller LED's are more efficient. Fewer LEDs are for production reasons.


An individual photon, while difficult to describe, can have various charges. It's these differences in charge, that we perceive as colour, as it effects the wavelength. The colour of light, is a direct indication of the charge it carries. It's speed is about fixed. Moving from a 0.2w to a 3w increases the count of photons (ppf) leaving at that position. It doesn't really say anything about how much they have spread out by the time they reach the canopy though (ppfd). That is more a function of beam angle if talking about a single LED. We have arrays though, so what the canopy gets, isn't influenced by the individual LED.

If there is something I'm missing, please do wade in with a physics lesson. (PMs about my spelling are less welcome. Especially one's with spelling mistakes)



I thought the picture fucking rocked TBH.

 

[Mars H.]

Anyone heard of the WICOP LED tech before?

 

[exploziv]

Just some news a while ago! Is it available yet to use? I bet at the right cost and with smart design those can really lift growlight efficiency and maybe even lower costs as tech advances. Nice! Future sounds good!

 

[zachrockbadenof]

A uniform canopy in the sweetspot will do wonders. Feeding alse needs to be up to par if you want to see plants perform under higher wattage on the dimmer as well..

and thats the problem ... uniform canopy... small tent, 4x3.5ft, n usually 3 or 4 diff varieties from my clones, n usually at least 1 new seedling, so i try in vain to get an even canopy...

 

[exploziv]

Sometimes its much easier and rewarding to just stick with just one or maybe 2 varieties at most, and then they should be varieties that grow about the same and have about the same flowering time.. But if I was you I would still try it before thinking it won't work, tho! Just threat it as something new thos, don't expect to treat it like a hps or something like that and to magically work as you wish.

 

[Douglas.Curtis]

I thought the picture fucking rocked TBH.

What do you like most about the weak maturation depths in the canopy?

 

[zachrockbadenof]

Sometimes its much easier and rewarding to just stick with just one or maybe 2 varieties at most, and then they should be varieties that grow about the same and have about the same flowering time.. But if I was you I would still try it before thinking it won't work, tho! Just threat it as something new thos, don't expect to treat it like a hps or something like that and to magically work as you wish.

we have been growing for upwards of 20years and in that time have grown some very good weed...BUT.... only once did we grow something i would consider an 'elite' , and being old and stupid did not take a cut... so every grow we pop some seeds looking for that special lady...

 

[FranJan]

Anyone heard of the WICOP LED tech before?

​

WICOP has been around for quite a bit now. Isn't it more for human centric lighting than for plants? I can see an increase in luminous intensity, (more light out of the package but not necessarily towards the plants), but can it increase radiant efficiency? Or is this the way the industry will inevitably go to?

Nevermind that, when is Mars Hydro going to produce a line of panels based on Seoul Semi's Sun-Like diodes?

http://www.seoulsemicon.com/en/technology/sunlike/why/#menu15

 

[f-e]

Douglas.Curtis

That's not physics. It's anecdotal evidence of your own making. Evidence that's not passing peer review.

That cheap unknown panels performance (which isn't LM301 or similar) isn't the physics based example needed to show higher powered diodes are better. High powered LEDs are always less efficient due to thermal management issues. You find most 1w chips are a pair of 0.5w devices sharing a single package. A 50w cob usually contains hundreds of LEDs packed together. Show me this better LED


If anyone can detect bickering, there is. Doug messaged me with spelling examples, as I made a typo. We all know such behavior isn't welcome. Typically in these situations, his message contained spelling mistakes. I find this behaviour redundant when the sites focus is growing information. Bad growing advice is what we should be pointing out. Such as how to choose lights.

 

[exploziv]

we have been growing for upwards of 20years and in that time have grown some very good weed...BUT.... only once did we grow something i would consider an 'elite' , and being old and stupid did not take a cut... so every grow we pop some seeds looking for that special lady...

Maybe more lights is the answer then, brother! More lights, more fun! More seeds popped!

 

[zachrockbadenof]

Maybe more lights is the answer then, brother! More lights, more fun! More seeds popped!

in a 4x3.5ft tent , with '2' 315's and '4' cheap leds on the sides, that should be suff lite - what i need is more space, then more lite.... but space it seems is always a problem

 

[Douglas.Curtis]

Using the wrong word is not a spelling mistake, but hey I see it really torqued you to have it pointed out. Meh...

A professional quality light would have the same maturation coloring all the way down... that's what I do not like about economy lights. Great for micro-scrog setups with 3-6" flowers, no fun for medium to full sized plants.

Powerful
Cheap
Reliable

Physics says pick two.

Edit: Yes, more diode$ i$ the an$wer, which you will get with a profe$$ional quality grow light.

 

[Mars H.]

Just some news a while ago! Is it available yet to use? I bet at the right cost and with smart design those can really lift growlight efficiency and maybe even lower costs as tech advances. Nice! Future sounds good!

We heard this tech lately. not sure if we will consider it in the future.

 

[Mars H.]

WICOP has been around for quite a bit now. Isn't it more for human centric lighting than for plants? I can see an increase in luminous intensity, (more light out of the package but not necessarily towards the plants), but can it increase radiant efficiency? Or is this the way the industry will inevitably go to?

Nevermind that, when is Mars Hydro going to produce a line of panels based on Seoul Semi's Sun-Like diodes?

http://www.seoulsemicon.com/en/technology/sunlike/why/#menu15

I am also not familiar with this. I heard it from one of my customers. We need to study this and see if it will be worthy of trying their chips.

 

[Mars H.]

in a 4x3.5ft tent , with '2' 315's and '4' cheap leds on the sides, that should be suff lite - what i need is more space, then more lite.... but space it seems is always a problem

These lights can cover 5x5tent well. maybe step up the game a little.

 

[Mars H.]

Using the wrong word is not a spelling mistake, but hey I see it really torqued you to have it pointed out. Meh...

A professional quality light would have the same maturation coloring all the way down... that's what I do not like about economy lights. Great for micro-scrog setups with 3-6" flowers, no fun for medium to full sized plants.

Powerful
Cheap
Reliable

Physics says pick two.

Edit: Yes, more diode$ i$ the an$wer, which you will get with a profe$$ional quality grow light.

powerful, cheap, reliable. i want to pick three.

 

[zachrockbadenof]

These lights can cover 5x5tent well. maybe step up the game a little.

since the present grow is over, the next grow will be in 5-6mos - i'm watching what will be the newest/greatest lites from mars- maybe a fc4800 with adjustable bars?? - samsung+osram+ adjustable bars..... can u say homerun....

 

[Mars H.]

since the present grow is over, the next grow will be in 5-6mos - i'm watching what will be the newest/greatest lites from mars- maybe a fc4800 with adjustable bars?? - samsung+osram+ adjustable bars..... can u say homerun....

The bars of FC-4800 are not removable. But the light is foldable. FC-8000's bar are removable.
https://www.mars-hydro.com/fc-8000-samsung-lm301b-co2-commercial-led-grow-light/

 

[exploziv]

Seems like more space is the answer, brother!

 

[zachrockbadenof]

Seems like more space is the answer, brother!

yessss.... i'm working on it.....