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Old 07-08-2003, 03:11 AM   #1
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2 questions

1. how important is it for the tank to have darkness? im sorta an insomniac and the tank is in my room so it doesnt get a whole lot of darkness.

2. ever tried looking at a tank under a black light? anything cool?
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Old 07-08-2003, 10:35 AM   #2
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Quote:
1. how important is it for the tank to have darkness? im sorta an insomniac and the tank is in my room so it doesnt get a whole lot of darkness.
Its important to the natural biological process. Complete darkness might not be needed but almost no light is needed so fish can sleep and corals can rest.

Quote:
2. ever tried looking at a tank under a black light? anything cool?
I have not done this but the actinic lights we use is very near the black light sprectirum. So you get a very simular effect from using those lights and since its not mostly ultraviolet light your not hurting any of the photosyntheic algae by using the actinic lights.
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Old 07-08-2003, 12:57 PM   #3
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I have heard that extended use of a black light is very harmful to fish.
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Old 07-08-2003, 02:34 PM   #4
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ok thanks guys =)

how much time of darkness is needed and does it need to be a regular cycle?
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Old 07-08-2003, 02:38 PM   #5
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It should be as consitant as possible. In the natural habatat the light/dark cycle for most tropical saltwater fish is very close to 12hrs on/off.

I have timmers on all my tanks so my lights come on/off at the same timeframe every day.
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