Your yield on a HLG550?
- Thread starter kdt15
- Start date
a mongo frog
Well-Known Member
I don't know yet, but if it was 550 grams you'd be murdering it i think. And if the 600 did 600 grams fucking hand jobs would be in order to everyone. I mean thats just me though. Your thoughts?
skoomd
Well-Known Member
Some dude here just pulled 1.9 grams per watt his second ever grow under samsung strips, so those numbers are easily possible if the setup is dialed in and the right strains are grown
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awesome! do you have a link or name i can look up?
no results yet but ive always thought 1 was a standard, just didnt know what the upper limits were. was hoping 1.5 was somewhat doable, and 2 if really perfected!
skoomd
Well-Known Member
https://www.rollitup.org/t/samsung-f564b-linear-strip-build.953509/page-3
He got 1763g with 900W of samsung strips. The samsung strips use the same led diodes as the quantum boards on the HLG 550 do.
He got 1763g with 900W of samsung strips. The samsung strips use the same led diodes as the quantum boards on the HLG 550 do.
CobKits
Well-Known Member
1 gram per watt would be pretty bad for an LED rig of that efficiency
a mongo frog
Well-Known Member
Of vendable bud, lets hope thats the truth.
can you offer more insight on what is stnadard yield g/w, good, and high end?
CobKits
Well-Known Member
theres a lot of factors, strain, space you have to grow in, growers skill, etc etc
in general (real round numbers)
SE HPS: 0.6-1.2
DE HPS: 0.8-1.5
CMH: 1-1.6
LEDS: 0.5-2.0 (huge range because LEDs cover so many different designs, there is no "standard"
a typical phosphor white of good system efficiency (1.6-2.2 umol/J) should be able to do 1.2-2.0
in general (real round numbers)
SE HPS: 0.6-1.2
DE HPS: 0.8-1.5
CMH: 1-1.6
LEDS: 0.5-2.0 (huge range because LEDs cover so many different designs, there is no "standard"
a typical phosphor white of good system efficiency (1.6-2.2 umol/J) should be able to do 1.2-2.0
awesome, thanks for the info. i guess my 1g/w was more of an HPS figure rather than LED.
how can an LED design (using same, good lights) end up with vastly different yields, I mean a watt is a watt regardless of design right? unless the range is due to nutes and poor growing method/conditions?
CobKits
Well-Known Member
not all of them are good lights
no! or there would be no incentive to use one type of light over another. CFLs to the best LEDs span a huge range of photosynthetic efficiency, like 0.7-2.2 umol/J
the following is worth a read despite the fact that the LEDs in that study were from 2013-2014 and most are sub-HPS in efficiency:
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0099010
once you get a handle of umol/J then you can make sense when an LED vendor quotes a umol/J or PPF (NOT PPFD!) number
umol/J = (PPF)/(input wattage)
PPFD = spot measurement which by itself is useless (slightly more useful as a PAR map at a distance but still doesnt tell you overall efficiency)
Lucky Luke
Well-Known Member
My first 600w HID grow I yielded a GPW of dry flower. (scrog). I should of yielded more as I didn't fill the net so 1.5 GPW from a single 600HID is achievable.
You would think the same W in LED should easily give you 1.5 GPW
Its all about filling the canopy.
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a mongo frog
Well-Known Member
I sure hope so. Ive only been over gram per watt with single ended with 2 strains, blue dream and space queen. with DE I've done it every time. Im hoping those hlg 600's a gram per watt with a 24 day veg SOG style sort of.
watched the video, thanks. going to go thru that journal post over time since its quite dense!
so the key is to get the best umol/J for LED's when determining quality? I'm hoping the high end (1.9, 2) of that 0.5-2.0g/w for led is the samsung diodes?