light
- Thread starter tanis97
- Start date
bacchus_fl
Member
Sorry but 15W isn't even close to enough. Even shrooms would have no growth or even die off slowely. They would also lift up way off the rock trying to reach the light, making them unattractive.
If I were you I would just save up my money and buy some pcs. They are going to be your cheapest up front cost and will have plenty of wattage to support a 20G reef.
Is your 20G a tall 20 or long 20?
If I were you I would just save up my money and buy some pcs. They are going to be your cheapest up front cost and will have plenty of wattage to support a 20G reef.
Is your 20G a tall 20 or long 20?
I
ivanfj
Guest
Agree. 15w of any glo isn't gonna take you anywhere even for shrooms. Back then when I didn't have the PC, I ran the same thing on my 20 and the light is just plain weak. At least get a 24" 65w PC and you can have some shrooms just like me. :happy:
billy ocean
Member
Thats not true. (about the lights)
wattage = The unit of measuring electrical power. Watts does not relate to the light output level. It defines the rate of energy consumption by an electrical device when it is in operation. The energy cost of operating an electrical device is calculated as its wattage time in hours of use. In single-phase circuits, it is related to volts and amps by the formula: Volts x Amps x Power Factor (PF) = Watts. Fish care nothing about that.
lumens = The lumen rating of a lamp is a measure of the total light output of the lamp
You want the most lumens per gal.
wattage and kelvin ratings are the means in which you do it.
ex.
average incandescent light bulb = 60watts at 10 lumens per watt = 600 lumens
NO flourescent = 40watts at 41 lumens per wat = 1650 lumens
What you need to look at is the Luminance and the Lux of the lights output.
Luminance:
Luminous Flux (light output). This is the quantity of light that leaves the lamp, measured in lumens (lm). Lamps are rated in both initial and mean lumens.
Initial lumens indicate how much light is produced once the lamp has stabilized; for fluorescent and high-intensity discharge (HID) lamps, this is typically 100 hours.
Mean lumens indicate the average light output over the lamp's rated life, which reflects the gradual deterioration of performance due to the rigors of continued operation; for fluorescent lamps, this is usually determined at 40% of rated life.
Lux:
The metric unit of measure for illuminance of a surface. One lux is equal to one lumen per square meter. One lux equals 0.0929 footcandles.
What is true is that marine-glo bulbs do not grow corals.
3 NO URI flourescents will grow any leather/shroom (2atinics)
3 VHO URI will grow everthing but SPS and clams.
wattage = The unit of measuring electrical power. Watts does not relate to the light output level. It defines the rate of energy consumption by an electrical device when it is in operation. The energy cost of operating an electrical device is calculated as its wattage time in hours of use. In single-phase circuits, it is related to volts and amps by the formula: Volts x Amps x Power Factor (PF) = Watts. Fish care nothing about that.
lumens = The lumen rating of a lamp is a measure of the total light output of the lamp
You want the most lumens per gal.
wattage and kelvin ratings are the means in which you do it.
ex.
average incandescent light bulb = 60watts at 10 lumens per watt = 600 lumens
NO flourescent = 40watts at 41 lumens per wat = 1650 lumens
What you need to look at is the Luminance and the Lux of the lights output.
Luminance:
Luminous Flux (light output). This is the quantity of light that leaves the lamp, measured in lumens (lm). Lamps are rated in both initial and mean lumens.
Initial lumens indicate how much light is produced once the lamp has stabilized; for fluorescent and high-intensity discharge (HID) lamps, this is typically 100 hours.
Mean lumens indicate the average light output over the lamp's rated life, which reflects the gradual deterioration of performance due to the rigors of continued operation; for fluorescent lamps, this is usually determined at 40% of rated life.
Lux:
The metric unit of measure for illuminance of a surface. One lux is equal to one lumen per square meter. One lux equals 0.0929 footcandles.
What is true is that marine-glo bulbs do not grow corals.
3 NO URI flourescents will grow any leather/shroom (2atinics)
3 VHO URI will grow everthing but SPS and clams.
bacchus_fl
Member
That is true Billy but most of us aren't Lighting Professors. Instead we use wattage as a general rule of thumb to measure what is needed to grow a specific coral.
Other than yourself I would be willing to bet there are only a hand full of people who actually know the lumens and/or lux of their lights, even people who have been doing this for decades.
None the less a 15W lamp is not going to sustain any coral growth.
I am going to go watch some Tell-a-Tubbies now before my brain over heats from the lighting lesson...lol
Other than yourself I would be willing to bet there are only a hand full of people who actually know the lumens and/or lux of their lights, even people who have been doing this for decades.
None the less a 15W lamp is not going to sustain any coral growth.
I am going to go watch some Tell-a-Tubbies now before my brain over heats from the lighting lesson...lol
