Footprints and Watts

When purchasing any grow light, you need to consider how much light (power) will be delivered to the area you want to grow in, and LED grow lights are no different. There are a lot of things to consider, as I detail below. In the table above I've ranked companies based on the likelihood of having enough lighting power to assuredly flower Cannabis within all of the lights' smallest advertised footprint. If every flowering or general-purpose light model offered by a company has enough effective watts per square foot to flower Cannabis, they went in "The Good" column. Companies which have at least one model that has enough effective watts per square foot to possibly flower Cannabis (or who don't provide enough information to know) went in "The Questionable" column. The companies in "The Bad" column don't offer a single light model which I feel could flower Cannabis within all of their smallest advertised footprint.

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What do They Mean by That?

Most vendors provide a claimed coverage area for their lights and some give different footprints areas with different names, which could make sense as different types of plants have different lighting intensity requirements, some even for different stages of their lifecycle. It would be impossible for an LED seller to give appropriate footprints for every kind of plant.

So it kind of makes sense that different sellers are giving different names to their advertised footprint(s), but this can be frustrating because you don't necessarily know what they really mean.

Some vendors only give a single "coverage area" or "footprint". It isn't clear whether this means you could grow low-light plants, high-light plants, or flower cannabis within that footprint. Hopefully it means you can grow and flower high-light, daylength-sensitive plants such as Cannabis in that area, but I guess the only real way to find out would be to try it yourself.

I've always assumed that if a seller is giving different "flowering" and "vegetative" footprints, they probably mean it to apply to Cannabis, but my research has me thinking that's not a safe assumption. By "flowering" they could be talking about flowering African violets, Cannabis, or barrel cactus, and there's a steady increase in the respective light requirements for flowering those plants. The only LED grow light company that I could find with an explicit statement of what they mean by "vegetative" and "flowering" footprints is Black Dog LED; they claim the footprints given apply to Cannabis. It would be nice if the other sellers were explicit about what kind of plant they mean, but this problem isn't limited to LEDs; HPS and other grow lights are most often sold with ambiguous footprint specifications as well.

Several sellers give two footprint sizes labeled "total coverage" and "core coverage" or some slight variation on that theme. This does kind of make sense; with LED lights, the individual LEDs each illuminate a circular area directly underneath them. Where these circles all overlap, the light is most intense, and this could be called "core coverage". Toward the edges of the footprint, less of the circles overlap and this could be interpreted as "total coverage". So for this total / core theme, the two footprints are probably achieved with the same light hanging height, whereas the veg / flowering footprints usually involve raising the light up a bit to get the larger veg footprint.

Still, "core coverage" doesn't necessarily mean that you could use it for high-light plants or for flowering Cannabis; you're left to make assumptions about what it really means.

Sometimes the names are so cryptic that it isn't clear what the seller means at all. Here are some notable examples:

  • HydroGrow:
    • For the Sol series of lights, two footprints are given: "Supplemental Coverage" and "Primary Coverage". While this seems like it would be a variation on the "total"/"core" theme, a little quick trigonometry to figure the hanging heights required to achieve each of these footprints given any reasonable estimate of the light spread angle (from the picture of the lights' reflector) shows this is almost certainly not the case. With power densities down to 0.78 watts per square foot, I'm pretty certain the definition of "supplemental coverage" might not include "keeping plants alive" let alone getting them to grow. But, the word "supplemental" already implies that you would need other lighting to grow plants in the footprint.
  • Kessil:
    • For the H350 light, they give two different-size footprints (4 and 9 square feet), both called "coverage area". This really isn't helpful.

Watts per Square Foot

One of the fairer ways of comparing the efficiency of all the different HID, fluorescent (/induction), plasma and LED lighting options is to look at the number of watts of power they require per square foot of plant-growing footprint. Since the varying footprint names given by the sellers imply different things, it is hard to make a fair across-the-board comparison. Of the lights I review here, the watts per square foot (W/ft2) range from 0.78 W/ft2 for "supplemental coverage" all the way up to 48.3 W/ft2 for "Intense Coverage"– more than a 60X difference, but because the footprint names are vague I can't really be sure what the seller meant.

So how can you tell how many watts per square foot you really need? It's going to depend on 3 things:

  1. The light intensity you need to grow or flower your plants. This depends mostly on what you are trying to grow and/or flower.
  2. How efficient the LED grow light is at converting a watt into light that makes it to your plants. Some LED lights are going to be more efficient than others, and new technology is always coming out, so this isn't necessarily going to be consistent between different LED lights.
  3. How efficient the light's spectrum is at growing and/or flowering plants. Since so many different spectrums are being offered, this isn't going to consistent between different LED grow lights either.

With all these considerations, I can't tell you for sure how many watts per square foot you will need for whatever you want to grow, but you may be able to figure out a guideline range yourself.

Since most people using artificial lighting are probably growing Cannabis, I will attempt to provide some guidance for flowering Cannabis. In the world of HPS lighting, most people seem to agree that you need at least 50 watts per square foot to get good results (a 1000W HPS over about a 4.5'x4.5' area, or a 600W HPS over about a 3.5'x3.5' area), but you're going to get better results with 63-67 watts per square foot (a 1000W HPS over a 4'x4' area, or a 600W HPS over a 3'x3' area). Many people use even more watts of HPS per square foot than that.

So I'm going to call the recommended range for HPS 50-67 watts per square foot. If an LED light is 50% more efficient than HPS lights at growing plants, which I believe is a fair upper-end assumption based on what I've seen so far, that means you need 1/3 less watts per square foot, a range of 32-45 watts per square foot. The table below shows W/ft2 ranges for different assumptions about how much more efficient LED grow lights can be compared to HPS:

Assumed LED efficiency increase over HPSLED W/ft2 to equate to HPS at:My opinion about whether is is realistic to flower Cannabis
50 W/ft267 W/ft2
50%3245Very likely
75%2938Possible
100% (double the efficiency)2534Unlikely
150%2027Highly unlikely
200% (triple the efficiency)1722No

The column in the spreadsheet "Likelihood of sufficient power to flower Cannabis within smallest advertised footprint if on a light mover" looks at the footprint area(s) specified by the seller (it takes the smallest footprint with the highest watts per square foot if there are two footprints) and labels it with my opinions according to the above table for the equivalent to 50 W/ft2 for HPS. This column represents my opinion only about the power density for the advertised footprint square feet; it is important to keep in mind all of the following:

Of the companies that actually give a "flowering" or "bloom" footprint, only Area 51, Black Dog LED and California Light Works have more than my recommended minimum 32 W/ft2 for all their lights. All of Lush's general-purpose lights qualify as well with the more generic footprint name “Intense Coverage”, but only if you don't consider footprint shape.

Note that this is all about comparing watts per square foot for the entire advertised footprint; if a light is ranked poorly it does not mean it will not flower Cannabis plants at all, just that it is less likely to be able to flower Cannabis within the entire area of the advertised footprint. To achieve better results, You can get a light and move it closer to the plants to shrink the footprint area and increase the W/ft2, or just put multiple lights over the same footprint area.

For example, if you put 7 of the Pro Max Grow MAX-600 models over the advertised 4'x4' footprint for a total of 36 W/ft2, I'm fairly certain the setup would flower Cannabis well. Likewise, if you just moved the MAX-600 closer to the plants and decreased the footprint size to 3.25 square feet by making it roughly 27" by 17", you would get 32 W/ft2, and that should work well too. But putting 1 MAX-600 above a 4'x4' growing area as advertised with 5.15 W/ft2 will not flower Cannabis over the entire area.

Effective Watts per Square Foot

In 2012 when I first put up this site, one of my main qualifications was watts per square foot. I labeled several lights as "Top Picks" based on the results of my analysis, and then bought one of these I had not tried before. It had enough watts per square foot that it should flower well, but it didn't flower well at all for me using the seller's recommended footprint. The results were inconsistent, with some plants doing OK but others obviously not getting enough light.

It took me a while to figure out the problem was that the seller had specified an inappropriate shape for their footprint–if I kept the same total area but changed the shape to match how the light was actually spreading out, the light did a better job of flowering.

This is why I've added the discussion and calculations of footprint shape to the site now. Basically, if the advertised footprint shape is wrong but you use that as your growing setup, you're wasting either growing area in the footprint or light off the ends (or both). I've come up with a percentage coverage score that represents how much area or light is actually usable, based on the lights' shapes and the way light spreads out from LEDs.

By multiplying the watts per square foot for a footprint by the coverage score, we get the true "effective watts per square foot" for the advertised lighting footprint; I've added this column to the spreadsheet for the smallest advertised footprint area, and the column "Likelihood of sufficient power to flower Cannabis within smallest advertised footprint" uses the scheme I set out above to show the probability of the light flowering Cannabis in the entire smallest advertised footprint when you account for the footprint shape.

Since I can't really make adjustments for spectrum or secondary lenses that may cause spotty coverage, this is the most objective score I was able to come up with for the likelihood of the light flowering Cannabis in the seller's advertised footprint.

If the seller didn't provide information on their light's shape, recommended footprint, or actual wattage I can't calculate this score; in these cases the column just shows "?".

Comparison Graph

To summarize again, I feel anything greater than 32 in the graph below is very likely to flower Cannabis well; 29-32 is possible, 25-29 is unlikely, 20-25 is highly unlikely, and anything below 20 will not flower Cannabis well at all.

Loading graph…

Footprint Names and Watts Data for All Lights

The data table is very large- you may need to scroll side-to-side as well as up and down to see the whole thing. Larger screens help! If you're only looking for one company or light model, enter the name in the search to only show those results.

CompanyConclusion RankingProductActual WattageFootprint 1 NameFootprint 1 Size (ft2)Footprint 1 Size (square feet)Footprint 1 W/ft2Footprint 1 Watts Per Square FootFootprint 1 Coverage %Footprint 1 Coverage PercentFootprint 2 NameFootprint 2 Size (ft2)Footprint 2 Size (square feet)Footprint 2 W/ft2Footprint 2 Watts Per Square FootFootprint 2 Coverage %Footprint 2 Coverage PercentFlower Power / Light Mover (W/ft2)Likelihood of Sufficient Power to Flower Cannabis Within the Smallest Advertised Footprint if on a light moverSmallest Footprint Effective W/ft2Smallest Footprint Effective Watts Per Square FootFlower Power (Effective W/ft2)Likelihood of Sufficient Power to Flower Cannabis Within all of Smallest Advertised Footprint
Diamond Series DS 100 - Extreme 3w
Total Coverage
7.50
13.33
Core Coverage
5.00
20.00
No
No
Diamond Series DS 200 - Extreme 3w
Total Coverage
10.50
17.62
Core Coverage
7.50
24.67
Highly unlikely
Highly unlikely
Diamond Series DS 300 - Extreme 3w
Total Coverage
14.00
18.57
Core Coverage
9.00
28.89
Unlikely
Highly unlikely
Diamond Series DS 400 - Extreme 3w
Total Coverage
13.50
27.26
Core Coverage
10.00
36.80
Very likely
Highly unlikely
Diamond Series DS 600 - Extreme 3w
Total Coverage
15.75
35.37
Core Coverage
12.00
46.42
Very likely
Possible
Diamond Series DS 800 - Extreme 3w
Total Coverage
24.75
30.63
Core Coverage
15.75
48.13
Very likely
Very likely
XTE Series DS XTE 100 - 5W LEDs
Total Coverage
7.50
12.13
Core Coverage
5.00
18.20
No
No
XTE Series DS XTE 200 - 5W LEDs
Total Coverage
10.50
17.62
Core Coverage
7.50
24.67
Highly unlikely
Highly unlikely
XTE Series DS XTE 300 - 5W LEDs
Total Coverage
14.00
19.57
Core Coverage
9.00
30.44
Possible
Highly unlikely
XTE Series DS XTE 400 - 5W LEDs
Total Coverage
13.50
27.26
Core Coverage
10.00
36.80
Very likely
Unlikely
Diamond Series EX-Veg DS200
Total Coverage
20.25
9.43
Core Coverage
9.00
21.22
N/A
N/A
Diamond Series EX-Veg DS300
Total Coverage
30.25
9.43
Core Coverage
16.00
17.69
N/A
N/A
Diamond Series XML DS XML 150
Total Coverage
9.00
14.44
Core Coverage
6.25
20.80
Highly unlikely
Highly unlikely
Diamond Series XML DS XML 350
Total Coverage
20.25
16.30
Core Coverage
16.00
20.63
Highly unlikely
Highly unlikely
Diamond Series XML DS XML 650
Total Coverage
30.25
20.43
Core Coverage
25.00
24.72
Highly unlikely
Highly unlikely
AT-120WB (White and Blue LEDs)
?
?
?
?
?
?
AT120RB (Red and Blue LEDs)
?
?
?
?
?
?
AT120W (All white LEDs)
?
?
?
?
?
?
AT120WR (White and Red LEDs)
?
?
?
?
?
?
AT-600-WR2 (White and Red)
Footprint
16.00
46.38
?
?
Very likely
?
GL100LED Full Spectrum 300W LED
Coverage Area
16.00
6.50
Flowering
7.00
14.86
No
?
GL80x5LED Full Spectrum 400W LED
Vegegative Stage
9.00
19.44
Flowering Stage
6.25
28.00
Unlikely
Unlikely
Full Spectrum 600 Watt LED
?
?
?
?
?
?
GL140x5LED Full Spectrum 700W LED
Vegegative Stage
12.25
26.61
Flowering Stage
9.00
36.22
Very likely
Very likely
Full Spectrum 900 Watt LED
?
?
?
?
?
?
Full Spectrum 1200 Watt LED
?
?
?
?
?
?
GL25LED Full Spectrum 75W LED
Coverage
4.00
9.50
?
?
No
No
GL25LED Full Spectrum 135W LED
Coverage
4.00
19.00
?
?
No
No
GL25LED Full Spectrum 180W LED
Coverage
6.25
17.44
?
?
No
No
W90-3000K
?
?
Flowering
2.78
34.20
Very likely
Very likely
W90-4000K
Veg
9.00
10.56
?
?
N/A
N/A
W90-5000K
Veg
9.00
10.56
?
?
N/A
N/A
PhytoMAX 200
Vegetative
12.25
17.55
Flowering
6.25
34.40
Very likely
Very likely
PhytoMAX 400
Vegetative
25.00
17.00
Flowering
12.25
34.69
Very likely
Very likely
PhytoMAX 600
Vegetative
36.00
16.67
Flowering
18.06
33.22
Very likely
Very likely
PhytoMAX 800
Vegetative
49.00
16.33
Flowering
25.00
32.00
Very likely
Very likely
PhytoMAX 1000
Vegetative
64.00
15.86
Flowering
30.25
33.55
Very likely
Very likely
SPYDR 600 START-MAX Spectrum
?
?
Coverage
16.00
21.63
N/A
N/A
SPYDR 600 GROW-MAX Spectrum
?
?
Coverage
16.00
20.81
Highly unlikely
Highly unlikely
SPYDR 1000 GROW-MAX Spectrum
?
?
Coverage
16.00
32.50
Very likely
Very likely
SPYDR 1200 GROW-MAX Spectrum
?
?
Coverage
16.00
41.56
Very likely
Very likely
Solar Storm 880W
Veg
49.00
13.27
Bloom
16.00
40.63
Very likely
Very likely
Solar Storm 440W
Veg
36.00
8.89
Bloom
9.00
35.56
Very likely
Very likely
Solar Flare 220W LED VegMaster
Veg
25.00
6.60
Bloom
4.00
41.25
N/A
N/A
Solar Flare 220W LED BloomBooster
Veg
25.00
6.60
Bloom
4.00
41.25
Very likely
Very likely
Solar Flare 220W LED FullCycle
Veg
25.00
6.60
Bloom
4.00
41.25
Very likely
Very likely
Solar Flare 110W LED VegMaster
Veg
9.00
10.00
?
?
N/A
N/A
Solar Flare 110W LED BloomBooster
Coverage area
9.00
10.00
?
?
N/A
N/A
90 Watt LED All RED G8 Flowering BOOST
Coverage area
10.00
8.20
?
?
N/A
N/A
240 Watt Full Spectrum G8LED BLOOM only
Coverage area
6.00
20.00
?
?
No
No
450 Watt Full Spectrum G8LED BLOOM only
Coverage area
12.00
23.33
?
?
Highly unlikely
Highly unlikely
240 Watt Full Spectrum G8LED Grow Light
Coverage area
6.00
23.33
?
?
Highly unlikely
Highly unlikely
450 Watt Full Spectrum G8LED Grow Light
Coverage area
12.00
23.33
?
?
Highly unlikely
Highly unlikely
600 Watt Full Spectrum G8LED Grow Light
Coverage area
18.00
21.67
?
?
Highly unlikely
Highly unlikely
900 Watt Full Spectrum G8LED Grow Light
Coverage area
24.00
22.50
?
?
Highly unlikely
Highly unlikely
E60
Target Area
67.24
9.37
?
?
No
No
RX30
?
?
?
?
?
?
L4A Series 10 (refurbished)
?
?
?
?
?
?
LX601 C-plate
Covers
16.00
39.38
?
?
Very likely
Very likely
LX601 G-plate
Covers
16.00
39.38
?
?
Very likely
Very likely
LX602
Covers
42.25
14.91
?
?
No
No
21X-PRO 36W
Coverage area
1.00
36.00
?
?
Very likely
Very likely
84X-PRO 120W
Coverage area
4.00
30.00
?
?
Possible
Possible
126X-PRO 200W
Coverage area
6.00
33.33
?
?
Very likely
Highly unlikely
168X-PRO 270W
Coverage area
7.50
36.00
?
?
Very likely
Very likely
189X-PRO 290W
Coverage area
9.00
32.22
?
?
Very likely
Very likely
336X-PRO 500W
Coverage area
16.00
31.25
?
?
Possible
Possible
420X-PRO 600W
?
?
?
?
N/A
N/A
Sol 1 (45 Watt Configuration)
Supplemental coverage
64.00
0.70
Primary Coverage
4.00
11.25
No
No
Sol 1 (85 Watt Configuration)
Supplemental coverage
100.00
0.85
Primary Coverage
9.00
9.44
No
No
Sol 2 (45 Watt Configuration)
Supplemental coverage
96.00
0.89
Primary Coverage
6.00
14.17
No
No
Sol 2 (85 Watt Configuration)
Supplemental coverage
150.00
1.17
Primary Coverage
12.00
14.58
No
No
Sol 4 (45 Watt Configuration)
Supplemental coverage
144.00
1.22
Primary Coverage
9.00
19.44
No
No
Sol 4 (85 Watt Configuration)
Supplemental coverage
225.00
1.33
Primary Coverage
16.00
18.75
No
No
Sol 6 (45 Watt Configuration)
Supplemental coverage
180.00
1.47
Primary Coverage
12.00
22.08
Highly unlikely
No
Sol 6 (85 Watt Configuration)
Supplemental coverage
270.00
1.85
Primary Coverage
20.00
25.00
Highly unlikely
Highly unlikely
Sol 9 (45 Watt Configuration)
Supplemental coverage
225.00
1.73
Primary Coverage
16.00
24.38
Highly unlikely
Highly unlikely
Sol 9 (85 Watt Configuration)
Supplemental coverage
324.00
2.31
Primary Coverage
25.00
30.00
Possible
Possible
NeoSol DS
Outperforms 1000W HID fixtures in
25.00
20.80
Outperforms 1000W HID fixtures in
16.00
32.50
Very likely
No
NeoSol NS
?
?
?
?
?
?
NeoSol LS
?
?
?
?
?
?
H380
Coverage area
4.00
22.50
?
?
Highly unlikely
Highly unlikely
H350 (Magenta or Purple models)
Coverage area
9.00
8.11
Coverage area
4.00
18.25
No
No
H150 (Magenta or Purple models)
Coverage area
4.00
7.50
?
?
No
No
H150 Blue
Coverage area
4.00
7.50
?
?
N/A
N/A
H150 Red
Coverage area
4.00
7.50
?
?
N/A
N/A
K3 - L300
Footprint
6.00
36.67
?
?
Very likely
Highly unlikely
K3 - L450
Footprint
8.75
30.86
?
?
Possible
Unlikely
K3 - L600
Footprint
12.00
26.67
?
?
Unlikely
Unlikely
K3 VEG L600
Footprint
12.00
26.67
?
?
N/A
N/A
K5 - XL750
Footprint
16.00
26.88
?
?
Unlikely
Highly unlikely
K5 - XL1000
Footprint
25.00
26.00
?
?
Unlikely
Highly unlikely
90 watt LED Grow Light UV
Coverage area
4.00
?
?
?
?
?
90 watt LED Grow Light HO (Vegetative Model)
Coverage area
4.00
?
?
?
N/A
N/A
BlackStar 480 watt LED Grow Light HO V2.0
Coverage area
6.00
39.83
?
?
Very likely
No
BlackStar 480 watt LED Grow Light UV V2.0
Coverage area
12.00
19.92
?
?
No
No
BlackStar 180 watt LED Grow Light HO V2.0
Coverage area
6.00
20.83
?
?
Highly unlikely
No
BlackStar 180 watt LED Grow Light UV V2.0
Coverage area
6.00
20.83
?
?
Highly unlikely
No
BlackStar 240 watt LED Grow Light HO V2.0
Coverage area
6.00
22.00
?
?
Highly unlikely
No
BlackStar 240 watt LED Grow Light UV V2.0
Coverage area
6.00
22.00
?
?
Highly unlikely
No
Lighthouse Hydro ION 8 426w FSF LED Grow Light with UVB
Coverage area
9.00
18.89
Coverage area
4.00
42.50
Very likely
Very likely
Lighthouse Hydro ION 8 1546w FSF LED Grow Light with UVB
Coverage area
36.00
?
Coverage area
16.00
?
?
?
BlackStar Chrome 180w LED Grow Light FSF
Coverage area @36"
9.00
?
Coverage area @18"
4.00
?
?
?
BlackStar Chrome 270w LED Grow Light FSF
Coverage area @36"
20.25
?
Coverage area @18"
9.00
?
?
?
BlackStar Chrome 405w LED Grow Light FSF
Coverage area @36"
20.25
?
Coverage area @18"
9.00
?
?
?
BlackStar Chrome 720w LED Grow Light FSF
Coverage area @36"
36.00
?
Coverage area @18"
16.00
?
?
?
BlackStar 600 watt LED Grow Light UV
Coverage area
12.00
?
?
?
?
?
BlackStar 900 watt Commercial Grade LED Grow Light UV
Coverage area
15.75
?
?
?
?
?
LumiGrow Pro 650
Supplemental
100.00
6.05
Sole Source
36.00
16.81
No
No
LumiGrow Pro 325
Supplemental
100.00
3.25
Sole Source
36.00
9.03
No
No
DOMINATOR
Max coverage
16.00
27.19
Intense coverage
9.00
48.33
Very likely
No
DOMINATOR XL
Max coverage
25.00
26.00
Intense coverage
16.00
40.63
Very likely
Highly unlikely
DOMINATOR 2X
Max coverage
16.00
27.19
Intense coverage
9.00
48.33
Very likely
No
DOMINATOR 2X XL
Max coverage
25.00
26.00
Intense coverage
16.00
40.63
Very likely
Highly unlikely
Luminator
Max coverage
9.00
20.00
Intense coverage
4.00
45.00
Very likely
Possible
Luminator 2X
Max coverage
9.00
20.00
Intense coverage
4.00
45.00
Very likely
Possible
Vegetator
Max coverage
16.00
20.63
Intense coverage
9.00
36.67
N/A
N/A
Vegetator 2X
Max coverage
25.00
13.20
Intense coverage
16.00
20.63
N/A
N/A
Herbalvador
cloning
16.00
11.25
vegetation
9.00
20.00
N/A
N/A
Herbalvador 2X
cloning
16.00
11.25
vegetation
9.00
20.00
N/A
N/A
Mars II 400w LED Grow Light
Coverage area
6.25
29.60
?
?
Possible
Possible
Mars II 700w LED Grow Light
Coverage area
9.00
34.44
?
?
Very likely
Very likely
Mars II 900w LED Grow Light
Coverage area
12.25
33.06
?
?
Very likely
Very likely
Mars II 1200w LED Grow Light
Coverage area
16.00
33.75
?
?
Very likely
Very likely
Mars II 1600w LED Grow Light
Coverage area
17.64
40.82
?
?
Very likely
Very likely
Reflector-48
Coverage area
4.00
23.75
?
?
Highly unlikely
Highly unlikely
Reflector-96
Coverage area
6.00
33.33
?
?
Very likely
Possible
Reflector-144
Coverage area
8.00
38.75
?
?
Very likely
Possible
Reflector-192
Coverage area
16.00
24.38
?
?
Highly unlikely
Highly unlikely
MarsPro 160LED Epistar-160
Coverage area
8.00
45.00
?
?
Very likely
No
MarsPro 320LED Epistar-320
Coverage area
16.00
43.75
?
?
Very likely
Very likely
MarsPro Cree-128
Coverage area
8.00
40.63
?
?
Very likely
No
MarsPro Cree-256
Coverage area
16.00
40.63
?
?
Very likely
Very likely
P150
Max Coverage
15.75
5.52
Core Coverage
4.50
19.33
No
No
P300
Max Coverage
17.10
10.53
Core Coverage
6.00
30.00
Possible
Unlikely
P450
Max Coverage
18.00
14.17
Core Coverage
7.50
34.00
Very likely
Possible
P600
Max Coverage
22.50
15.33
Core Coverage
10.00
34.50
Very likely
Highly unlikely
P900
Max Coverage
24.00
21.46
Core Coverage
15.00
34.33
Very likely
Very likely
P1200
Max Coverage
33.00
20.91
Core Coverage
20.00
34.50
Very likely
Possible
P4-XML2
Max Coverage
16.00
14.50
Core Coverage
9.00
25.78
Unlikely
Unlikely
P9-XML2
Max Coverage
25.00
22.20
Core Coverage
16.00
34.69
Very likely
Very likely
MAX-600
Coverage area
16.00
6.50
?
?
No
No
MAX-1200
Coverage area
16.00
15.63
?
?
No
No
Illuminator 100W
Vegetative
16.00
6.25
Flowering & Fruiting
4.00
25.00
Highly unlikely
Highly unlikely
Illuminator Jumbo 200W
Vegetative
25.00
7.72
Flowering & Fruiting
9.00
21.44
Highly unlikely
Highly unlikely
Illuminator Commercial 400W
Vegetative
30.00
13.07
Flowering & Fruiting
16.00
24.50
Highly unlikely
Highly unlikely
Mother Keeper 100W
?
?
?
?
N/A
N/A
300 Series 90° reflector
Veg
25.00
13.60
Coverage Area
9.00
37.78
Very likely
Very likely
300 Series 120° reflector
Coverage Area
16.00
21.25
?
?
Highly unlikely
Highly unlikely
400 Series 60° reflector
Coverage Area
16.00
27.50
?
?
Unlikely
Unlikely
400 Series 90° reflector
Veg
64.00
6.88
Flower
16.00
27.50
Unlikely
Unlikely
400 Series 120° reflector
Veg
64.00
6.88
Flower
25.00
17.60
No
No
400+ Series 60° reflector
Coverage Area
16.00
27.50
?
?
Unlikely
Unlikely
400+ Series 90° reflector
Veg
64.00
6.88
Flower
16.00
27.50
Unlikely
Unlikely
400+ Series 120° reflector
Veg
64.00
6.88
Flower
25.00
17.60
No
No
M6
?
?
?
?
?
?
M9
?
?
?
?
?
?
M16
?
?
?
?
?
?

Comments

2 thoughts on “Footprint Watts and Names”

  1. I bought a used clw 800 on ebay and several of the red diodes did not work. I called the company and was truthful(usually not a good idea) and told them I was not original owner, bought it on ebay but still needed it fixed. I paid to ship it to them and approx 4 weeks later they sent me a 880 model free and clear. True story, hardly believe it myself. Actually kind of screws them. Why buy new? Had to pay it forward. Love your article. Very informative. Peace to you and yours

    1. I've yet to hear anyone complain about California Light Works' customer service; it seems they do treat their customers right! Some of the companies I compare do seem to provide good customer service; others not as much. Thanks for sharing your experience.

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