Full spectrum led?

D

Dave455

Well-Known Member
Aolelon said:
I just grew with megacrop and it's the cats meow man. Plants were extremely healthy all the way through. I was using 5.5g mid flower till harvest, may have been just a little too much nitro, so I would honestly play around 4.5g-5.5g at this stage. I added a little bit of protekt in the beginning, but I didnt need to add any calmag to my r/o water at all.
Click to expand...
add PK boost Bud explosion ?
 
Rahz

Rahz

Well-Known Member
wietefras said:
This has already been done and purple was shown to be more efficient than warm white. Also, the warmer the white, it was also more efficient. IIRC there was about 5% difference between purple and 4000K (with 2700K and 3000K in between)

Indeed with same intensities and not accounting for efficiency of the lights themselves.
Click to expand...
Interesting. Have a link or info that would help find it?
 
Rahz

Rahz

Well-Known Member
Dave455 said:
add PK boost Bud explosion ?
Click to expand...
That's what I'm thinking, some kind of PK booster. N normalized to 100 Maxigro NPK elemental ppm is 100-22-116. Megacrop is 100-25-120. Slight difference in PK but basically a veg formulation. 5g of Megacrop yields 128-32-153. I can see that doing a pretty good job in flower but flower formulas generally have more P.

The only objective reference I know of is field crops generally receive no more than 40 ppm at field capacity. The whole PK boost market is based on more is better, but how much difference it really makes I don't know. I need to do some testing once I get my media figured out.
 
Randomblame

Randomblame

Well-Known Member
sethimus said:
sanlight is white + red, not something i would consider a "blurple" light?
Click to expand...

Yeah, their latest generation but the M30 modules you can still find in blurple. I like them a lot but I don't like the driver solution. For me dimming it a key feature and as far as I know they are still not dimmable and use 89% eff. Recom drivers. There is already a new one with 4 or more parallel modules but I don't know if they finally use Meanwell or other dimmable drivers?

Edit..
Would be nice if we could buy only the PCBs with diodes. They use osram square and oslon ssl120 top bins.. 8)
 
Last edited:
S

sethimus

Well-Known Member
Randomblame said:
Yeah, their latest generation but the M30 modules you can still find in blurple. I like them a lot but I don't like the driver solution. For me dimming it a key feature and as far as I know they are still not dimmable and use 89% eff. Recom drivers. There is already a new one with 4 or more parallel modules but I don't know if they finally use Meanwell or other dimmable drivers?

Edit..
Would be nice if we could buy only the PCBs with diodes. They use osram square and oslon ssl120 top bins.. 8)
Click to expand...
https://www.sanlight.com/wp-content/uploads/2018/04/Technische-Daten-SANlight-M30-DE-22022018.pdf

5% in the 400-500nm range is not something i would call blurple, needs way more blue for that.
 
Randomblame

Randomblame

Well-Known Member
sethimus said:
they used to have 8% blue before:

Click to expand...

Yeah, but the spectrum was much more pinkish earlier and now its just warmwhite with the newer generations. But indeed there is not enough blue to call it a true blurple. I believe this 8% was because of CRI70 coolwhite Oslons and now they use less but Square series diodes with higher CRI. Result is a more white looking spectrum with high CRI and still a lot red and deepred.
I find their 2,7μMol/j system eff. is really hard to beat. My 2ft. F-strips run at 450mA(50mA per diode) and according to the calculator tool I should get ~189lm/w. Thats "only" 2,74 and 2,5μMol/j at system level. This Square series diodes really make a difference because of its up to 3,91μMol/j. But ~5€ for a single diode is too much..
 
You must log in or register to reply here.
Top