@ Sativied :
Look brother ...I'll tell you what's next .....
Myself & my personal needs ,is next ...
I'd been growing with HPS ( 400W Phillips GreenPower ) for long enough time (>5 years) ,
always seeking to cover my personal needs of herb . All this time It never went over 280-330 gr...
Per grow cycle ..( Average duration : 4 x7 x18 hours veg & 10x7x12 flowering ) .
I do not give a $hit about greenhouses or crop /cash growers ...I do not care about their problems or
needs or whatever ...
What I do care of though ,is that now ,from same space/room ,same nutes ,same grow cycle duration ,
same old " LAI" grow method ( Leave As Is ) ,I do get 480-530 gr of herb .Almost double than it used to be ...
And guess what ...I use same power as before ...
Around 400 Watts ..( A bit less than before ,actually...)
Only this time ,HPS is long ago ditched ...
Now ,if you want ,you can go on saying whatever you like ....
Personally I do not mind or care really ....
I do not have to prove anything to anyone ...
One happy grower ,that I am !
And no it did not cost me a fortune ....
In fact ,it is a quite cheap 'hobby' ,making lights that they will last 10 to 15 years ....
But ,nevertheless ,it all comes down to this:
All I know-poor but happy me - is that I've almost doubled my yields and yes ....
Led herb is superior to HPS herb ..
Whether you like it or not.
Believe it or not .
(FGS ! Just try it once ,bro ! )
As MH herb is superior to HPS herb ....
HQI herb is even far superior than HPS herb ...
( You see ,here in this part of the world,
we're still about 100 years left behind than the rest of the world ,
in almost every aspect of everyday life ...
There're still people growing with "bare" HQI (
unshielded mercury vapour ) bulbs ...
Yields are for laughs,but quality is unearthy ...
Please do take my word on that one ! )
So ....
From me you can have a nice day ,and by all means do whatever you like .
Just try -if you wish to do so-, not to neglect this :
Some things you just can not change ...
Or stop ...Inhibit ...
Say for example ,you can not stop ,'things'
evolving ...
...
Unless again,you trust that some things will & shall never change ..
Like technology,for one thing ..
Or the fact that the Earth is flat ,dead-still and is the center of the whole universe ..
Bitchy ,but honest to the bone ...
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@ churchhaze :
Blue and red leds do work ....
They 're a perfect match ,supplementing sunlight or HID lights ..
But that goes only for greenhouses ...
For more 'domesticated' applications no ,they won't 'fit'-work just by themselves that's been proven alright ,but remains also the fact ,that designing a fixture ,which implements monochrome leds ,is way' tricky ' in so many aspects and not so simple as many like to think it is.
Still ,I'm not personally quite sure that is the high radiometric efficiency of most COBS vs
HID lights ( HPS ,mainly ) that is accounting for that + 25% ~ 50% in yields .
( CXA3070 top bin cobs yield,at average ,
35%-50% more than HPS of
same wattage ) .
Little story that repeats itself ,per approx 6 months,in a world-wide scale :
From .5 -.6 gpw for a 'newbie ' to growing with HPS ,
straight to 1.2 -1.3 gpw onto the next grow with CXAs .
Newbie remained newbie ..
Space was the same ...
Nutes the same ...
So it must be the lights ,that made that whoppin' difference ....
Anyway,plants do seem to be really affected by light quality only in low-light conditions and
during the very first stages (but crucial enough ) of vegetative growth .
Blasting a young /small plant with monochrome leds ,
might be 'preparing' / 'shaping' the plant in wrong ways .
Later ,under the same illumination ,the same plant seems to be far from it's ideal genetic potentional vs energy supplied .The plant is 'under-performing' .
While ,at high irradiances of white light,only then it seems that mj really 'performs' outstandingly !
But yet ,if different CCTs of white are being used ,then the same genome ,
will be expressed by distinctive different -in plenty of aspects -phenos/phenotypic groups...
As it always have been so ,with different types of HID / fluo ,
but of same more or less , total irradiance ...
Thus ,I think that the light quality coming out from those 3000 K led arrays ,
makes a difference ,too ...
Not probably ,so much from a direct photosynthetic enhancing /synergistic effect of some sort ,but rather from indirect photomorphogenic metabolic pathways.
Photomorphogenesis is the crucial 'parameter' here ...
Originating from hellenic :
Φως {Phos} =
light + Μορφή {Morphee} =
shape/outlook + Γέννεση { Yhenesee } =
birth
Birth of an outlook ,'cause of light ...
That 's is the meaning of it ...
The macroscopic expression of the 'interaction' between DNA (genotype) with light ,( with the latter being the #1 environmental life-sustaining variable for species involved ,as it is the prime energy source at the same time ) ,in the form of a certain plant physiology (phenotype)..
Back to ....3000K SSL 80 CRI ...
...More blue & red wls than of HPS ,less FR ,less Green ,about same amber/yellow wls ....
That probably affects the light quanta total capture mechanisms and physiology,the photo-systems' I & II photosynthetic "load" level & interaction between ,the accessory pigments & light capturing protein complexes' concentration & biosynthesis ,the photosynthetic capacity /recovery mechanisms and many more plant bio-tech stuff going on inside the cells of our precious herb ,as we speak ...
Still,they might be some things 'outta there' ,that we're still unaware of ...
Regarding the interaction between light and living plants .
Specially,regarding light & our beloved herb ...
What we 've been seeing / witnessing so far ,is an emerging 'trend',
a clear & strong indication ,-that eventually will prove to be
a solid state -and absolute -fact :
" Nothing beats the quality & quantity of herb ,white COB leds yield ."
Comin' real soon ...
( Until further notice,at least ...
Can't be 100% sure ,with all those led manufacturers ..
Their sleeves seem to be packed ,full of hidden Aces ..)
Cheers.