Indoor Yield-O-Rama

Find the available lumens per sq ft you want to use then read across to the type of bulb you have. The shaded area of the table marks the 5000-10000 lumen per square foot range, this is the range most growers use.

LogoSquare Foot Coverage From The Available Lumens/Sq Ft
 For Standard Bulbs

(figures 3 sq ft and greater have been rounded to the nearest integer, figures less than 1 sq ft not shown)

Available
Lumens
per Sq Ft
Bulb Wattage Available
Lumens
per Sq Ft
1500 1000 600 430 400 250 175 100 70 40
MH M
H
H
P
S
HPS HPS M
H
H
P
S
M
H
H
P
S
MH M
H
H
P
S
M
H
H
P
S
4 foot
Fluoro
Gro
4 foot
Fluoro
cw/ww
33000 5 4 4 3 1.6 1.2 1.5                   33000
32000 5 4 4 3 1.6 1.2 1.5                   32000
31000 5 4 4 3 1.7 1.2 1.6                   31000
30000 5 4 5 3 1.7 1.3 1.6                   30000
29000 5 4 5 3 1.8 1.3 1.7   1               29000
28000 6 4 5 3 1.9 1.4 1.8   1               28000
27000 6 4 5 3 1.9 1.4 1.8   1               27000
26000 6 5 5 3 2 1.5 1.9   1.1               26000
25000 6 5 5 3 2.1 1.5 2   1.1               25000
24000 6 5 6 4 2.2 1.6 2.1   1.2               24000
23000 7 5 6 4 2.3 1.7 2.1   1.2               23000
22000 7 5 6 4 2.4 1.7 2.2 1 1.3               22000
21000 7 6 6 4 2.5 1.8 2.3 1 1.3               21000
20000 8 6 7 4 3 1.9 2.5 1.1 1.4               20000
19000 8 6 7 5 3 2 3 1.1 1.5               19000
18000 9 7 8 5 3 2.1 3 1.2 1.6               18000
17000 9 7 8 5 3 2.3 3 1.2 1.6               17000
16000 10 8 8 5 3 2.4 3 1.3 1.8               16000
15000 10 8 9 6 3 3 3 1.4 1.9 1             15000
14000 11 9 10 6 4 3 4 1.5 2 1             14000
13000 12 9 10 7 4 3 4 1.6 2.2 1.1             13000
12000 13 10 11 7 4 3 4 1.8 2.3 1.2             12000
11000 14 11 12 8 5 3 4 1.9 3 1.3             11000
10000 15 12 14 9 5 4 5 2.1 3 1.5             10000
9000 17 13 15 10 6 4 5 2.3 3 1.6   1         9000
8000 19 15 17 11 7 5 6 3 4 1.8 1 1.2         8000
7000 22 17 19 12 7 5 7 3 4 2.1 1.2 1.3         7000
6000 26 20 23 15 9 6 8 4 5 2.4 1.4 1.5   1     6000
5000 31 24 27 17 10 8 10 4 6 3 1.6 1.8 1 1.2     5000
4000 39 30 34 22 13 10 12 5 7 4 2 2.3 1.2 1.5     4000
3000 52 40 45 29 17 13 16 7 9 5 3 3 1.7 2   1 3000
2000 77 60 68 44 26 19 25 11 14 7 4 5 2.5 3 1 1.6 2000
1000 155 120 135 87 52 38 49 21 28 15 8 9 5 6 2 3 1000
  1500 1000 600 430 400 250 175 100 70 40
Fluorescent

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