screediu
Well-Known Member
Heres a basic layout for lights
Color Spectrum for the 2 phases
5000k-7200k spectrum for vegative (7200k being the best for bushy plants)
2000k-5000k spectrum for flower (2000k being the best for bigger buds)
Area of coverage by lighting method.
HPS and MH:
100w- 1'x1' Grow Space
150w- 1.5'x1.5' Grow Space
250w- 2'x2' Grow Space
400w- 3'x3' Grow Space
600w- 3.5'x3.5' Grow Space
1000w- 4'x4' Grow Space
1500w- 5'x5' Grow Space
CFL to be equivalent to 250w hid:
150w per square foot for veg
300w per square foot for flower
Keep as close to plants as possible without burning preferably within 3-4 inches.
Flouro tubes and induction flouro:
Very similar to cfl as color temperature and distance from plant but are different as they spread light more evenly than cfl and are easier to adjust than multiple cfl's
T5's have high output bulbs which would be the best for your grow
T8's a almost a standard bulb but a little bigger around than T5's and not as much output
T12's these bulbs are on the verge of extinction and dont produce many lumens/watt
-Full spectrum fluorescent bulbs have all the colors of the Kelvin scale. This bulb is good for vegetation stage.
-Wide spectrum fluorescent bulbs will restrict development of side branching, helps plants mature faster.
This fluorescent is high in the red, orange and yellow color range. In fact, this fluorescent is the highest than
all other fluorescent bulbs. As a matter of fact, this fluorescent is much like an HPS color range, which makes it the
best all around choice for flowering stage.
-Daylight spectrum fluorescent bulbs are very high (if not the highest) in the blue range on the Kelvin scale.
This fluorescent promotes an arctic blue look. Good for vegetation stage.
-Cool spectrum fluorescent bulbs will promote multiple side growth, nice green foliage. This fluorescent is high in
the blue range, giving off a bright white appearance. Good for vegetation stage
-Warm spectrum fluorescent, will promote extra thick stems and branches, and will give you denser buds than
other spectrums. This fluorescent is high in the red range on the Kelvin scale. Good for flowering stage
-In the old school of fluorescent growing, an even mix of warm white and cool white tubes has been proven to be the best
combination of light spectrums to use for flowering stage. If wide spectrum bulbs are unavailable in your area, then this is the combo to use.
LED:
Each panel has its own area coverage so cant give those numbers
240w LED = 250w HID
300w LED = 400w HID
500w LED = 600w HID
800w LED = 1000w HID
200 – 280 nm UVC ultraviolet range which is extremely harmful to plants because it is highly toxic.
280 – 315 nm Includes harmful UVB ultraviolet light which causes plants colors to fade. Good for trichome production near the end of flowering stage
315 – 380 nm Range of UVA ultraviolet light which is neither harmful nor beneficial to plant growth.
380 – 400 nm Start of visible light spectrum. Process of chlorophyll absorption begins. UV protected plastics ideally block out any light below this range.
400 – 520 nm This range includes violet, blue, and green bands. Peak absorption by chlorophyll occurs, and a strong influence on photosynthesis. (promotes vegetative growth)
520 – 610 nm This range includes the green, yellow, and orange bands and has less absorption by pigments.
610 – 720 nm This is the red band. Large amount of absorption by chlorophyll occurs, and most significant influence on photosynthesis. (promotes flowering and budding)
720 – 1000 nm There is little absorption by chlorophyll here. Flowering and germination is influenced. At the high end of the band is infrared, which is heat.
Plasma:
1000w- 4'x4' area (i think 1000w is the only size out right now)
Limited use lights:
Mercury Vapor- Use only in large grow space with good ventilation and during
last few weeks of flower to promote trichome production from emitted UVB
Lights you should not use:
Incandescent- Does not provide a usable spectrum or intensity of light
Xenon- Very low lumens/watt around 30-35 compared to cfl with 60-75
Halogen- Do not use get extremely hot 300w can reach over 900 degrees farenheit and 500w can exceed 1200 degrees farenheit
Color Spectrum for the 2 phases
5000k-7200k spectrum for vegative (7200k being the best for bushy plants)
2000k-5000k spectrum for flower (2000k being the best for bigger buds)
Area of coverage by lighting method.
HPS and MH:
100w- 1'x1' Grow Space
150w- 1.5'x1.5' Grow Space
250w- 2'x2' Grow Space
400w- 3'x3' Grow Space
600w- 3.5'x3.5' Grow Space
1000w- 4'x4' Grow Space
1500w- 5'x5' Grow Space
CFL to be equivalent to 250w hid:
150w per square foot for veg
300w per square foot for flower
Keep as close to plants as possible without burning preferably within 3-4 inches.
Flouro tubes and induction flouro:
Very similar to cfl as color temperature and distance from plant but are different as they spread light more evenly than cfl and are easier to adjust than multiple cfl's
T5's have high output bulbs which would be the best for your grow
T8's a almost a standard bulb but a little bigger around than T5's and not as much output
T12's these bulbs are on the verge of extinction and dont produce many lumens/watt
-Full spectrum fluorescent bulbs have all the colors of the Kelvin scale. This bulb is good for vegetation stage.
-Wide spectrum fluorescent bulbs will restrict development of side branching, helps plants mature faster.
This fluorescent is high in the red, orange and yellow color range. In fact, this fluorescent is the highest than
all other fluorescent bulbs. As a matter of fact, this fluorescent is much like an HPS color range, which makes it the
best all around choice for flowering stage.
-Daylight spectrum fluorescent bulbs are very high (if not the highest) in the blue range on the Kelvin scale.
This fluorescent promotes an arctic blue look. Good for vegetation stage.
-Cool spectrum fluorescent bulbs will promote multiple side growth, nice green foliage. This fluorescent is high in
the blue range, giving off a bright white appearance. Good for vegetation stage
-Warm spectrum fluorescent, will promote extra thick stems and branches, and will give you denser buds than
other spectrums. This fluorescent is high in the red range on the Kelvin scale. Good for flowering stage
-In the old school of fluorescent growing, an even mix of warm white and cool white tubes has been proven to be the best
combination of light spectrums to use for flowering stage. If wide spectrum bulbs are unavailable in your area, then this is the combo to use.
LED:
Each panel has its own area coverage so cant give those numbers
240w LED = 250w HID
300w LED = 400w HID
500w LED = 600w HID
800w LED = 1000w HID
200 – 280 nm UVC ultraviolet range which is extremely harmful to plants because it is highly toxic.
280 – 315 nm Includes harmful UVB ultraviolet light which causes plants colors to fade. Good for trichome production near the end of flowering stage
315 – 380 nm Range of UVA ultraviolet light which is neither harmful nor beneficial to plant growth.
380 – 400 nm Start of visible light spectrum. Process of chlorophyll absorption begins. UV protected plastics ideally block out any light below this range.
400 – 520 nm This range includes violet, blue, and green bands. Peak absorption by chlorophyll occurs, and a strong influence on photosynthesis. (promotes vegetative growth)
520 – 610 nm This range includes the green, yellow, and orange bands and has less absorption by pigments.
610 – 720 nm This is the red band. Large amount of absorption by chlorophyll occurs, and most significant influence on photosynthesis. (promotes flowering and budding)
720 – 1000 nm There is little absorption by chlorophyll here. Flowering and germination is influenced. At the high end of the band is infrared, which is heat.
Plasma:
1000w- 4'x4' area (i think 1000w is the only size out right now)
Limited use lights:
Mercury Vapor- Use only in large grow space with good ventilation and during
last few weeks of flower to promote trichome production from emitted UVB
Lights you should not use:
Incandescent- Does not provide a usable spectrum or intensity of light
Xenon- Very low lumens/watt around 30-35 compared to cfl with 60-75
Halogen- Do not use get extremely hot 300w can reach over 900 degrees farenheit and 500w can exceed 1200 degrees farenheit