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PL lights just means the wattage can be contained in a small form factor. So if you need 245W of lights, just get 245W of lights. Can be FL, can be PLCorrect me if I wrong
If my tank is 5ft x 2ft x 1 ft
the number of light is 245Watts of lightings.
20W of PLC is about 100W of lighting
let it be 36W of PLC still = 100W
so if i had 8 X 36 PLC light, is it = 800 W of light?
PL lights just means the wattage can be contained in a small form factor. So if you need 245W of lights, just get 245W of lights. Can be FL, can be PL
Joe is correct. When we refer to watts per gallon, we refer to light level equivalent to the light emitted by certain wattage of FL. PL and FL light level are roughly the same.
When those labels says that 36W = 100W, they means 36W of the PL light is equivalent to the light from a 100W incadescent bulb.
BC
The Ancient Mariner
not really true to the meaning......wattage is just a guideline but the type of bulb used determines the intensity.
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i no idea. I asking only.
So how? I was sudden think this question when i when shopping and saw 20 W = 100++w, then .......
so what is my intensity of my light in the tank?
[quote:cd46280c78="clanbuster"]i no idea. I asking only.
So how? I was sudden think this question when i when shopping and saw 20 W = 100++w, then .......
so what is my intensity of my light in the tank?[/quote:cd46280c78]
I have already explain above.
That should be 20W.
BC
Resistance is futile, you will be administrated!
Take the actual wattage. Meaning 20W. The 3WPG guideline is based on actual PL or FL wattage.
As explained by BC, 20W = 100W means that the 20W FL is as bright as a 100W incandescent lightbulb.
Incandescent lightbulbs refer to the typical round yellow light bulb. The type used in comics to indicate the cartoon character suddenly got a bright idea.
So for 3WPG guideline, take the actual wattage of the PL or FL light tube. Not the incandescent equivalent.
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then why buy PL light? expensive? buy those normal one still give the same result. oh no. i got cheated.
No you did not get cheated. People use PL lights because they produce less heat than FL ones, and are more compact in size.
[quote:a86fc07e29="clanbuster"]then why buy PL light? expensive? buy those normal one still give the same result. oh no. i got cheated.[/quote:a86fc07e29]
you can put more pl lights per square foot of tank surface than fl lights....
MH, 150W x 2 will solve all your problem
colin | The Wilderness and Forest | FTS
[quote:f948b0bc18="barmby"]MH, 150W x 2 will solve all your problem
hey, sound good!! For PL light, what is the highest Watts? before i buy MH
[quote:e3b0acd794="clanbuster"]hey, sound good!! For PL light, what is the highest Watts? before i buy MH[/quote:e3b0acd794]
i think highest PL tube is 55W... rite??? pls correct me if i wrong...
Originally Posted by barmby
MH, 150W x 2 will solve all your problem
MH. i would think of buying Metal halide due to my fish tank height is too tall.
if not wrong, 55W is the highest for PL light.
no matter how many 55W x num of PL light will not give u one 150W due to height.
the problem is , does MH, gave 6500k or 8000k?
i found at least 10000k. algae might give me this problem!
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