bulb Lumens/watt Eq T12 watts
T12 58.9 1
T10 62.3 1.06
T8 91.1 1.55
T5 104 1.77
T5HO 92.6 1.57
MH 84.1 1.43
CF 79.4 1.35
Runs cooler, better profile for parabolic reflectors, nearly the same cost, make t5/linear better imo.
from Sylvania catalog
Compact Fl. lamp (Dulux-L), 40W, T5, CCT=4100K, CRI=82, length=22.6",Initial >lumens=3150
Similar lamp - 55W - 4800Lm
Pentron High output T-5 39W, 36" 4100K, CRI=82, 3500 Lm
Octron 700 series lamp 40W, T-8, 60" length, CCT=4100K, CRI=75, 3550 Lm,
Octron 800 series lamp 40W, T-8, 60" length, CCT=4100K, CRI=82, 3775 Lm,
That just initial lumens, take into account better reflectors and heat
Also as Fishscale mentioned, this is almost certainly total output not taking into account restrike. So 10% less light just from the two sides being close.....
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