diggs99
Well-Known Member
damn bro, i dont think theres anyone on site that consistantly puts time,thought and energy into throwing down legit post after post like you do.Theres a lot of variables that go into determining actual efficiency, and by no means does a blanket statement of "50% efficiency" correspond to all LED's.
Samsung is ~61%-67% efficient. Others are creeping up as well. Horticulture phosphored LEDs are generally between 2.2μmol/J - 2.5μmol/J.
Example:
30W/ft2 × (~2.2μmol/J) = 66μmols·s/ft2
10.76ft2 = 1m2
66μmols·s/ft2 × (10.76ft2/m2)
=
710.16μmols·s/m2; 710.16 PPFD
...
30W/ft2 × (~2.5μmol/J) = 75μmols·s/ft2
75μmols·s/ft2 × (10.76ft2/m2)
=
807μmols·s/m2; 807 PPFD
With LED the light spread is more uniform, between 700 - 800 PPFD will produce great buds, and over 850 PPFD is where you'll start to run into "diminishing returns." This is the reasoning behind "30W/ft2."
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glad we have you bud