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Old 05-10-2007, 01:09 PM   #1
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Sunlight Wattage

Is there a way to measure the wattage coming from sunlight inot a room? My room that houses my fish tank doesn't get direct sunlight, but it's quite bright throughout the whole day. Does anyone have any ideas how I can measure this easily?
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Old 05-10-2007, 01:50 PM   #2
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F&S sells a light meter, I suppose that might work
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Old 05-10-2007, 01:54 PM   #3
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Apogee makes a nice PAr light meter that easily measures what you want, they are about 300$, but water proof etc and can read both electric and sun light sources specifically relevant to plants.

Note: sunlight varies throughout the day period, so one single reading is not going to tell that much. Electric light is far more stable.

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Tom Barr
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Old 05-10-2007, 04:33 PM   #4
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Hmmm, okay I'll look into these items. Light varies throughout the day, but the room is pretty bright from sun up to sun down. It's just a nice area on the house without anything blocking light, not even trees. I have less than 1 WPG on the tank currently and just a handful of plants that are doing well. I didn't want to push my luck without seeing how much light I really have available to me via the sun.

Thanks, guys.
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Old 05-10-2007, 05:06 PM   #5
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If you're planning on using a sunny room, you might want to look into Diana Walstad's Natural Aquarium methods.
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Old 05-10-2007, 06:02 PM   #6
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Quote:
Originally Posted by Purrbox
If you're planning on using a sunny room, you might want to look into Diana Walstad's Natural Aquarium methods.
I see she has a book. Are these methods contained in her book?
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Old 05-10-2007, 08:14 PM   #7
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That's what her book is about. There's also a lot of information available online. Some forums like APC have an entire subforum devoted to the topic.
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