Documented research indicate that on Mon, 18 Jul 2005 20:49:31 +0200, Derek
Benson wrote:

On Mon, 18 Jul 2005 17:13:47 GMT, Suzie-Q
wrote:

Should an aqarium light stay on 24/7?

If you mean 24 hours a day, all the time, no it shouldn't. The light
should be on about 12 hours a day, off the other 12 hours.

This actually makes me wonder. We have ours turn on at 7, because that's
the only way the fish have enough time to wake up so we can feed them
before we leave for work. And then we have it turn off at 22.00 (10 PM),
because otherwise we won't ever get to see the tank with the lights on ...

That makes our tank run with lights on for 15 hours, and off for 9 ...

Would it be in anyway beneficial to have the lights off for 3 hours mid-day
or would that serve nothing but screw up their cycle even worse ???

We're talking about a 29 gal All-Glass tank with flourescent light on
timer. The light that was supposed to come with the tank wasn't in the box,
so the shop gave us a replacement for free, and according to their own
statement, the one we got is of much better quality than what the tank
normally ships with.

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