Lighting confusion

[Alan]

I've read information regarding lighting levels (watts/gallon etc) but am a
bit confused as to how they relate to flourescent tubes. Is the 30w rating
on a tube it's power consumption or light output, given that a tube outputs
more light than an equivalent wattage tungston bulb?

Apologies if this is a dumb question :)

Alan

[RedForeman ©®]

watts is a measurement of output, like speakers put out 30watts, lights put
out watts, they consume volts, produce watts... IIRC

--
RedForeman ©®
still trying to remember to BOTTOM post....



"Alan" > wrote in message
...
> I've read information regarding lighting levels (watts/gallon etc) but am
a
> bit confused as to how they relate to flourescent tubes. Is the 30w rating
> on a tube it's power consumption or light output, given that a tube
outputs
> more light than an equivalent wattage tungston bulb?
>
> Apologies if this is a dumb question :)
>
> Alan
>
>

[Harry Muscle]

"RedForeman ©®" > wrote in message
...
> watts is a measurement of output, like speakers put out 30watts, lights
put
> out watts, they consume volts, produce watts... IIRC
>
> --
> RedForeman ©®
> still trying to remember to BOTTOM post....
>

Close, but not exactly. Watts is a measurement of energy, in this case
electrical. A 30 watt bulb uses 30 watts of electricity to produce a
certain amount of lumens (light output). The whole watts per gallon
measurement comes from the fact that most people use fluorescent bulbs over
their aquariums, so instead of taking about lumens per gallon it became
easier to refer to watts per gallons (it's easy to find out how many watts
your bulb uses, but the lumens produced, that you'll have to contact the
manufacturer for or measure it yourself). If you're dealing with a light
source other than normal fluorescent bulbs or compact fluorescent bulbs, the
watts per gallon rule goes out the window. If you want to compare lighting
your tank with a different type of light (ie: tungsten bulb), then figure
out how many lumens per gallon you get from it, and compare to the lumens
per gallon produced by a certain amount of watts per gallon from a
fluorescent bulb setup.

Hope that helps,
Harry




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[RedForeman ©®]

"Harry Muscle" > wrote in message

> Close, but not exactly.

the story of my life Harry... the story of my life....