stardustsailor
Well-Known Member
I'think I'll get some sleep ....
And probablycontinue later on ...
And probablycontinue later on ...
Turning coal into...Ok ..Silver!
- Thread starter stardustsailor
- Start date
I found a grow on RIU with astirs with about 1,6g/W.
So if cree and western chips are even much more efficient then those, should there not be 1,8g/W-2g/W grows all around by experienced users with A51 and Hanspanels?
Havent found those, but maybe I was looking at the wrong places?
I want to build 5 "lights", 4 Flower only, 1 Flower/Veg. For the 4 small modules I thought I will take one 30W warmwhite array in middle and + about 10x 3W diodes on one heatsink and use a single driver -that cheapo 18pcs 650mA, -73V allpurpose driver. That would drive the 30W array with about 20W.
My Idea was to use for the 10x 3W diodes: 1cw, 4x 630nm, 4x 660nm and 1ww
After what ive learned here, should I leave the 660 (guess badies from satisled) and the CW out?
For the 5th panel in the middle I planned to use 4x 100W Warmwhite arrays each @ 30W. 2x 30W red array @ 24 or so Watts.
Also I have 2x 30W CW arrays. You said those pretty much suck. Ok turn them off in flower. But for Veg should I use them instead of the WW? Or in Combination like 2x WW + 2x CW or 4WW and CW for veg. I also could run the CW in parallel for a bit better efficiency resulting in 15W each.
Sorry I can ask this else where if you want.
I dont want to spoil this thread of awesomeness
So if cree and western chips are even much more efficient then those, should there not be 1,8g/W-2g/W grows all around by experienced users with A51 and Hanspanels?
Havent found those, but maybe I was looking at the wrong places?
I want to build 5 "lights", 4 Flower only, 1 Flower/Veg. For the 4 small modules I thought I will take one 30W warmwhite array in middle and + about 10x 3W diodes on one heatsink and use a single driver -that cheapo 18pcs 650mA, -73V allpurpose driver. That would drive the 30W array with about 20W.
My Idea was to use for the 10x 3W diodes: 1cw, 4x 630nm, 4x 660nm and 1ww
After what ive learned here, should I leave the 660 (guess badies from satisled) and the CW out?
For the 5th panel in the middle I planned to use 4x 100W Warmwhite arrays each @ 30W. 2x 30W red array @ 24 or so Watts.
Also I have 2x 30W CW arrays. You said those pretty much suck. Ok turn them off in flower. But for Veg should I use them instead of the WW? Or in Combination like 2x WW + 2x CW or 4WW and CW for veg. I also could run the CW in parallel for a bit better efficiency resulting in 15W each.
Sorry I can ask this else where if you want.
I dont want to spoil this thread of awesomeness
stardustsailor
Well-Known Member
Don't you worry ..
You do not spoil anything.
In fact you are contributing to it ...
You do not spoil anything.
In fact you are contributing to it ...
I found a grow on RIU with astirs with about 1,6g/W.
So if cree and western chips are even much more efficient then those, should there not be 1,8g/W-2g/W grows all around by experienced users with A51 and Hanspanels?
Havent found those, but maybe I was looking at the wrong places?
Ha-ha-ha !!!
You're absoloutely right !
But ...Let us see some ..parameters ...
1) I' done myself some tests with a seemingly weird outcome :
I've found out that 3 x Astir panels ASL flowering ( each panel has 6x 640 nm red leds/ 6 x NW 5000K / 12 x WW 3000K..
All the leds driven @320mA..Power at plug for all three: ~72 W )
yield more ,in almost every case ,than one of GD SDS ( 12x 660nm Oslon 80 ,24x WW 2700K 95CRI Oslon 80 ,driven at 700mA ..Power at plug: ~75 Watt )
Considerably more ....Now how's that possible ?
For many reasons ..
Some regarding the led lights,others are related with other things,not the led lights themselves...
One good reason is the quality of light (spectrum ).A fine example that proves it's importance ,contrary to what is believed..
(Once more : Mj will grow under lots of odd/weird types of light -spectrums-...But not up to/close to her 'genetic potentional' ..
For a plant ,to reach that point ,many things have/must to be there and others better not to be there..(herbivorous insects for example or fungi ... )
Quality of light (spectrum) is a way crucial variable / parameter...
There's some crucial things that have to be cleared out ,
specially about the red leds and their effect-importance on mj ...
Later on ...
Another reason is the multiple small arrays ...
( - COBS are great ....But nothing will ever beat the 1-3 watters ,that are spreaded all over the leaf canopy.
Leds increase their growing efficiency( => better yields ) ,when used by numbers(unfortunately=>expensive way)...not as a single powerfull light source..
I want to build 5 "lights", 4 Flower only, 1 Flower/Veg. For the 4 small modules I thought I will take one 30W warmwhite array in middle and + about 10x 3W diodes on one heatsink and use a single driver -that cheapo 18pcs 650mA, -73V allpurpose driver. That would drive the 30W array with about 20W.
My Idea was to use for the 10x 3W diodes: 1cw, 4x 630nm, 4x 660nm and 1ww
After what ive learned here, should I leave the 660 (guess badies from satisled) and the CW out?
Yes ,if they are common eastern cheapos ...
Try for yourself..Built another simple panel with those reds ..Have it on veg and see what happens ...
Put it on flowering plants and see what will happen then ...
Try it ...
The CW can stay for vegging ...
For the 5th panel in the middle I planned to use 4x 100W Warmwhite arrays each @ 30W. 2x 30W red array @ 24 or so Watts.
Also I have 2x 30W CW arrays. You said those pretty much suck. Ok turn them off in flower. But for Veg should I use them instead of the WW? Or in Combination like 2x WW + 2x CW or 4WW and CW for veg. I also could run the CW in parallel for a bit better efficiency resulting in 15W each.
If you can switch them off during late flowring,there's no problem ,leave there ..
Vegging mj ,does not need only blue...
Yes she needs less light than when full flowering ,but still that light has to be rich in other wls too...
2x WW + 2x CW..looks good Have one-two red 620-630nm ,also ...
Sorry I can ask this else where if you want.
I dont want to spoil this thread of awesomeness
stardustsailor
Well-Known Member
Hm..
At this point ,I feel the need to tell you another-long ,long-story ....
Well,nothing to do today actually...Still a bit sick...
Now..
The following are a mix of scientificly proven things and of personal thoughts/ideas ..
Take them ...addito salis grano...
Mj is a very 'advanced' plant ,comparing to many other plants..
I'll explain what I mean ...
In fact many species of plants have 'complex' / advanced mechanisms ,comparing to the majority of plantae kingdom...
Some are carnivorous ...
Some are extremely poisonous ...
Some react to inscect bites and warn the rest of neighbouring plants around ! ( Methyl Jasmonate ,phytohormone )
Some are able to 'change' in many ways really fast ,in order to survive at almost any given environment around Earth.
Weeds ...
Mj is an advanced plant in many ways ....
It can grow in really cold climates ( ruderalis) and at same time in tropical ones(sativa) ...
She has plenty of mechanisms which enpower this awesome ability...
Advanced ..
What exactly I mean ?
Now,that is rather complicated ..
I'll try to make things simple....
At this point ,I feel the need to tell you another-long ,long-story ....
Well,nothing to do today actually...Still a bit sick...
Now..
The following are a mix of scientificly proven things and of personal thoughts/ideas ..
Take them ...addito salis grano...
Mj is a very 'advanced' plant ,comparing to many other plants..
I'll explain what I mean ...
In fact many species of plants have 'complex' / advanced mechanisms ,comparing to the majority of plantae kingdom...
Some are carnivorous ...
Some are extremely poisonous ...
Some react to inscect bites and warn the rest of neighbouring plants around ! ( Methyl Jasmonate ,phytohormone )
Some are able to 'change' in many ways really fast ,in order to survive at almost any given environment around Earth.
Weeds ...
Mj is an advanced plant in many ways ....
It can grow in really cold climates ( ruderalis) and at same time in tropical ones(sativa) ...
She has plenty of mechanisms which enpower this awesome ability...
Advanced ..
What exactly I mean ?
Now,that is rather complicated ..
I'll try to make things simple....
stardustsailor
Well-Known Member
One advanced mechanism mj has is this :
There are three distinctive types ....(ruderalis-indica-Sativa )
Each type has a lot of differences ,in many ways ,with the remaing two ...
Ruderalis is not a photoperiodic plant ,can grow in cold environments ,has not any defences against strong sunlight or herbivorous insects/animals(trichomes/THCA) ,
and more ..
Indica has many other ,Sativa other distinctive characteristics ....
And their genome of all three is inter-exchangeable...They can 'mix' ,thus producing 'hybrids'..
That expands drastically the geographical / enviromental diverse regions ,where mj can survive/grow...
Almost anywhere ....
Amazing !!!
But how is that done actually ?
There are three distinctive types ....(ruderalis-indica-Sativa )
Each type has a lot of differences ,in many ways ,with the remaing two ...
Ruderalis is not a photoperiodic plant ,can grow in cold environments ,has not any defences against strong sunlight or herbivorous insects/animals(trichomes/THCA) ,
and more ..
Indica has many other ,Sativa other distinctive characteristics ....
And their genome of all three is inter-exchangeable...They can 'mix' ,thus producing 'hybrids'..
That expands drastically the geographical / enviromental diverse regions ,where mj can survive/grow...
Almost anywhere ....
Amazing !!!
But how is that done actually ?
MrFlux
Well-Known Member
That spectrum is literally going off the deep end, must have been some stretched out plants.
Satis only sells one type of 660nm so i guess it must be the crappy one. http://www.satisled.com/3w-high-power-red-led-star-emitter-for-plant-grow-light-660nm670nm_p433.html
Does Astir use 3W @1W for better efficiency or directly 1W diodes?
The driver is like 6€ and if the leds cost another 5€, heatsink like 20€, what does make that 24W light cost 100€?
Is it the handmade part?
I wonder because:
Wattagewise Hans Panel is like about 3x Astir. Ok 72W vs 65W.
3x Astir costs0 285€, 1 Hans costs 180€. Regarding the W its about 4€/W vs 2,8€/W. Why?
So 285€ vs 180€ and hans only uses quality Cree and Osram vs Astir with good-cheapones
And Hans uses a better driver and a very nice reflector design and he drives those Leds fairly on low power too.
Where is the catch?
Astir seems to say they r non profit and id guess hans trys to make a (small) profit.
Does Astir use 3W @1W for better efficiency or directly 1W diodes?
The driver is like 6€ and if the leds cost another 5€, heatsink like 20€, what does make that 24W light cost 100€?
Is it the handmade part?
I wonder because:
Wattagewise Hans Panel is like about 3x Astir. Ok 72W vs 65W.
3x Astir costs0 285€, 1 Hans costs 180€. Regarding the W its about 4€/W vs 2,8€/W. Why?
So 285€ vs 180€ and hans only uses quality Cree and Osram vs Astir with good-cheapones
And Hans uses a better driver and a very nice reflector design and he drives those Leds fairly on low power too.
Where is the catch?
Astir seems to say they r non profit and id guess hans trys to make a (small) profit.
stardustsailor
Well-Known Member
Mj's awesome 'adaptability' sources deep in the mechanisms involved of 'sensing' and 'using' the light ..
In all three different sub-species and their hybrids ,light acts in certain ways ...
Mj uses plenty of chemical substances ,that 'absorb' photons ,for different reasons ....
A really complicated " light sensing " chemical photoreceptor system ...
That complex system is what makes mj such an advanced plant ,regarding her adaptability ...
She 'sees ' and 'eats' everything .....
To the last photonic drop ....
Those chemical substances-the photoreceptors - are mainly proteins .
1) Some of them are the 'energy hunters '....
They capture light and transform it into electric charge, later to be transformed into carbohydrates(starch,etc)
Those proteins are the chlorophylls (A+B ,for mj) and their Magnesium Photovoltaic ion ...!!!
2) Others are assisting the main energy hunters ,by gathering 'the left overs' of the hunt ....
3) Some are protecting the whole thing,from excess light power damage
4) Others are the 'time-keepers ' ...Measuring the changes of daylight/ darkenss ratio...And control many aspects of the plant's life ...
5) Some sense the light direction /power/angle...
6)Others control the rate of matabolism...
7) Others are of unknown to us operation/use
Some probably are still completely unknown...
And all of them ,operate as a single ' sensing-energy producing unit ' ...
Way complex ...
But also ....
Way advanced ...
In all three different sub-species and their hybrids ,light acts in certain ways ...
Mj uses plenty of chemical substances ,that 'absorb' photons ,for different reasons ....
A really complicated " light sensing " chemical photoreceptor system ...
That complex system is what makes mj such an advanced plant ,regarding her adaptability ...
She 'sees ' and 'eats' everything .....
To the last photonic drop ....
Those chemical substances-the photoreceptors - are mainly proteins .
1) Some of them are the 'energy hunters '....
They capture light and transform it into electric charge, later to be transformed into carbohydrates(starch,etc)
Those proteins are the chlorophylls (A+B ,for mj) and their Magnesium Photovoltaic ion ...!!!
2) Others are assisting the main energy hunters ,by gathering 'the left overs' of the hunt ....
3) Some are protecting the whole thing,from excess light power damage
4) Others are the 'time-keepers ' ...Measuring the changes of daylight/ darkenss ratio...And control many aspects of the plant's life ...
5) Some sense the light direction /power/angle...
6)Others control the rate of matabolism...
7) Others are of unknown to us operation/use
Some probably are still completely unknown...And all of them ,operate as a single ' sensing-energy producing unit ' ...
Way complex ...
But also ....
Way advanced ...
stardustsailor
Well-Known Member
Exactly!
Right on spot ...
But when ?
If used in veg/early flowering ....
Cause in middle/ late flowering ,things are way different ...
Way-Way different ...
(Still with a problem though ...FR shortens the flowering period all together ...From start to maturity ...)
stardustsailor
Well-Known Member
Yes.....I'm afraid ...
stardustsailor
Well-Known Member
..To speed things up a bit ....
Light is not used only for photosynthesis ,but also for photomorphogenesis which in turn
in vegetative stage will help the plant to reach the best state of photosynthesis ratio ,depending of the present light environment.
In reproductive stage ,photomorphogenesis along with circadian rythm mechanisms ,cause a vast bio-chemical alteration in plant's metabolism
which leads to flowering and maturing (regarding mj ) ...
Light quality is so crucial and of great impact .
For example ...A harvested mj plant ,if exposed to 18/6 'vegging' spectrum ,will 're-juvenate' ..
"Annual " -One cycle plant ,huh ?
So light power is not enough to grow mj at her 'fullest ' ...
Neither good spectrum is enough to do the same ...
Mj needs both of them at the same time ,to really grow at the full /or close to the fullest of genetic potentional...
Which by the way ...Seems "stretchy' enough ...Under some light 'manipulation' ...
How all that apply to leds ?
Light is not used only for photosynthesis ,but also for photomorphogenesis which in turn
in vegetative stage will help the plant to reach the best state of photosynthesis ratio ,depending of the present light environment.
In reproductive stage ,photomorphogenesis along with circadian rythm mechanisms ,cause a vast bio-chemical alteration in plant's metabolism
which leads to flowering and maturing (regarding mj ) ...
Light quality is so crucial and of great impact .
For example ...A harvested mj plant ,if exposed to 18/6 'vegging' spectrum ,will 're-juvenate' ..
"Annual " -One cycle plant ,huh ?
So light power is not enough to grow mj at her 'fullest ' ...
Neither good spectrum is enough to do the same ...
Mj needs both of them at the same time ,to really grow at the full /or close to the fullest of genetic potentional...
Which by the way ...Seems "stretchy' enough ...Under some light 'manipulation' ...
How all that apply to leds ?
sry for editing my previous post.
This is what i added:
Does Astir use 3W @1W for better efficiency or directly 1W diodes?
The driver is like 6€ and if the leds cost another 5€, heatsink like 20€, what does make that 24W light cost 100€?
Is it the handmade part?
I wonder because:
Wattagewise Hans Panel is like about 3x Astir. Ok 72W vs 65W.
3x Astir costs0 285€, 1 Hans costs 180€. Regarding the W its about 4€/W vs 2,8€/W. Why?
So 285€ vs 180€ and hans only uses quality Cree and Osram vs Astir with good-cheapones
And Hans uses a better driver and a very nice reflector design and he drives those Leds fairly on low power too.
Where is the catch?
Astir seems to say they r non profit and id guess hans trys to make a (small) profit.
So im my "perfect world" the patented reflector design, better driver, profit making, top brand quality led panel should be more expensive...
This is what i added:
Does Astir use 3W @1W for better efficiency or directly 1W diodes?
The driver is like 6€ and if the leds cost another 5€, heatsink like 20€, what does make that 24W light cost 100€?
Is it the handmade part?
I wonder because:
Wattagewise Hans Panel is like about 3x Astir. Ok 72W vs 65W.
3x Astir costs0 285€, 1 Hans costs 180€. Regarding the W its about 4€/W vs 2,8€/W. Why?
So 285€ vs 180€ and hans only uses quality Cree and Osram vs Astir with good-cheapones
And Hans uses a better driver and a very nice reflector design and he drives those Leds fairly on low power too.
Where is the catch?
Astir seems to say they r non profit and id guess hans trys to make a (small) profit.
So im my "perfect world" the patented reflector design, better driver, profit making, top brand quality led panel should be more expensive...
stardustsailor
Well-Known Member
Listen ...
I do not work for Astir ,I 'm just the designer of those lights .
(One of my older designs,which I show them how to easily construct by themselves)
I never asked from them any 'rights' or money ,or what so ever ...
Furthermore I do not run the company..
Really I do not know about the prices ,as those lights (like astir uses ) I made them firstplace and haven't bought them from astir ...
I really do not know ...
There's been some time since I had a short phonecall with one of their team ...
(About a new spectrum that they should consider making ..)
Nothing more than that ...
( I think the leds cost more than 5€ ...Triple that ..But still,285 Euro for these three panels ,it is way much,I've to agree ...)
Send them an e-mail..
Asking those things ...
That's what I would 've done,anyway ..
stardustsailor
Well-Known Member
Astir type led array cost :
1 x mcpcb= 5$
1x heatsink =27$
24x leds=20$
1x CCdriver = ~9$
cables/paste/etc =5$
Total : ~65$
75-85$ (custom,transport,profit,taxes ,etc included ) would have been a nice retail price ,for those panels ...
1 x mcpcb= 5$
1x heatsink =27$
24x leds=20$
1x CCdriver = ~9$
cables/paste/etc =5$
Total : ~65$
75-85$ (custom,transport,profit,taxes ,etc included ) would have been a nice retail price ,for those panels ...
regarding the 660 i guess i will trash them and buy more Red Arrays thanks a lot, not best coverage but so convenient 
65$ BOM vs 85$. (custom,transport,profit,taxes ,etc included ) I think assembly could be most expensive, depending wether they use a reflow oven (i guess they do) but also if they have to drill threads and things like that.
Edit forget what i said, u should know best.
But great job developing them
thanks a lot, not best coverage but so convenient 65$ BOM vs 85$. (custom,transport,profit,taxes ,etc included ) I think assembly could be most expensive, depending wether they use a reflow oven (i guess they do) but also if they have to drill threads and things like that.
Edit forget what i said, u should know best.
But great job developing them
PetFlora
Well-Known Member
I may delete this after reading past lax123 thread, where SDS posted the following response
Another reason is the multiple small arrays ...
( - COBS are great ....But nothing will ever beat the 1-3 watters ,that are spread all over the leaf canopy.
Leds increase their growing efficiency( => better yields ) ,when used by numbers(unfortunately=>expensive way)...not as a single powerful light source..
I am of 2 minds about multiple lower wattage emitters creating better homogenization across the canopy.
On one hand I have used 4 multiple smd x 4ft @ ~ 16w WW tubes, and have long considered 2 x 4 panels. I started LED Retrofit Technologies to replace t8 tube troffers in businesses.
We installed one 2 x 4 (600/1200) 5000K @ ~ 70w panel in my partner's dental lab. Pretty amazing how far and wide it throws light compared to 4 x 4ft 5000K tubes. Alas, no 3000K panels, but 4000 is normal. Of course, they come with diffusers in place. We have not bothered to take one apart yet.
Imagine a tent fully lined with these...
The other part of my mind says multiple ~ 20-50w cobs inside parabolic reflectors are more than good enough, and certainly a lot easier to DIY
Another reason is the multiple small arrays ...
( - COBS are great ....But nothing will ever beat the 1-3 watters ,that are spread all over the leaf canopy.
Leds increase their growing efficiency( => better yields ) ,when used by numbers(unfortunately=>expensive way)...not as a single powerful light source..
I am of 2 minds about multiple lower wattage emitters creating better homogenization across the canopy.
On one hand I have used 4 multiple smd x 4ft @ ~ 16w WW tubes, and have long considered 2 x 4 panels. I started LED Retrofit Technologies to replace t8 tube troffers in businesses.
We installed one 2 x 4 (600/1200) 5000K @ ~ 70w panel in my partner's dental lab. Pretty amazing how far and wide it throws light compared to 4 x 4ft 5000K tubes. Alas, no 3000K panels, but 4000 is normal. Of course, they come with diffusers in place. We have not bothered to take one apart yet.
Imagine a tent fully lined with these...
The other part of my mind says multiple ~ 20-50w cobs inside parabolic reflectors are more than good enough, and certainly a lot easier to DIY
stardustsailor
Well-Known Member
From what I know,they hand soldering the leds one-by one and they do not own a reflow oven ..regarding the 660 i guess i will trash them and buy more Red Arrays
65$ BOM vs 85$. (custom,transport,profit,taxes ,etc included ) I think assembly could be most expensive, depending wether they use a reflow oven (i guess they do) but also if they have to drill threads and things like that.
Edit forget what i said, u should know best.
But great job developing them
(while I have both reflow oven and computer controlled hot-plate ) ...
Not an easy task to reflow those plastic cased/lensed 8mm leds ...
They tend to melt/deform (althought still operating ..)
The real advantage of the Astir system is the multiple panel aspect ...
Ok ,they are pretty good cooled passively ,with that massive heatsink ( 4 lb weight ! ) ..
Their 'eastern' leds are custom ordered (each type ) to certain specs and quality standards .
Not like the ceramic branded led's efficiency or quality ,but way better than the ordinary-'casual' Eastern leds sold on E-bay and elsewhere ..
Still their real advantage is this :
They can grow plants either just 2 of them or 20 of them ...
Cause of their rich spectrum ...
For other such small arrays,even having way better leds ,I've some doubts,regarding their overall growing efficiency,over
a certain power threshold ...
And that is because of their restricted spectrum ...
While one or two of these panels may seem to work great ...
What happens if you have 6 of them in 3' x 3' area ?
I'm afraid the answer would be over-saturated and light-inhibited plants ...
Until those designers ,at one point realise that they'll have to sacrifice electric efficiency over spectrum,
in order to make their led light more power-wise versatile ,but also more growing-efficient ,I'll have my doubts ...
Rather Nothern European approach to it ...Rather 'Square' and 'absolute'..Without 'feeling' or "temperament'...
Cruel numbers speak and say the truth ...
" Which leds are the most efficient ? those blue ones and those reds ...
Ok ..Let's have those ,then...'
Well,mj does not care about that ...
Mj is a living organism ...
Not a machine...
She likes more the 'unefficent ' PC white leds than any other 'minimalistic '- 'photosynthesis peak oriented' - mix of monochromatics ...
More simply ...Celery and carrots do not have a particular problem neither with the 'poor' R&B ,electrically efficient led spectrum,neither with low radiant power ...
Mj and water melons won't grow good enough under 6 or 8 per 3'x3 area of these quality north european panels.
I challenge those designers to do it ...:
" Increase the irradiance over 700-800 umol/sec /m^2 ,with your super efficient panels and let us see the growth under them ...
Put 6 or 8 of your beautiful monochromatic arrays on 3'x3 grow space and grow 2-3 plants of mj ...
Not just show us grows with one or two panels , with 'bedded' small plants, at low/average irradiances .....
Let's see what happens then ....At ' full power ' ..."
stardustsailor
Well-Known Member
More simply ,without accusing or trying to compare ...
With led lights goes like this :
Each led lighting fixture can possibly perform great under certain circumstances ,while in others will possibly perform poorly .
Is there a led light ,so versatile ,that will perform in most situations ?
Well that's what I'm after lately ...
A cheap as possible ,user friendly ,trouble-free ,versatile as possible led system ...
For almost every mj home grower's special needs/restrictions ...
At least it's basic " outlook' ...
I'm after it's 'primal ' characteristics ..
I'll share them and hope to analyse them further along ,with you all ...
With led lights goes like this :
Each led lighting fixture can possibly perform great under certain circumstances ,while in others will possibly perform poorly .
Is there a led light ,so versatile ,that will perform in most situations ?
Well that's what I'm after lately ...
A cheap as possible ,user friendly ,trouble-free ,versatile as possible led system ...
For almost every mj home grower's special needs/restrictions ...
At least it's basic " outlook' ...
I'm after it's 'primal ' characteristics ..
I'll share them and hope to analyse them further along ,with you all ...
MrFlux
Well-Known Member
I have a couple of dozen of those going and they are not so bad at all. There is an EpiLED chip inside. I did some crude caloric measurements of the radiometric efficiency and it's in the ballpark of 30%. They are slightly better than the 620nm from Satisled.