by Young1 on January 11th, 2009

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Do fish sleep? Should i be turning my tank light off at night..will it disrupt them if i leave it on?

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by PocketNut is as sure as a peanut on July 20th, 2010
Yes, many species do indeed sleep, some fall asleep on one side of their body, whilst the other remains alert, a very handy survival strategy!

I have my tank lights connected to two separate timer switches set to switch on or off at different times so that they give a dimmer light towards nightfall, and likewise at sunrise.
All you need is an ordinary domestic timer switch, plug your light unit into it and set the time, easy.
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Do fish sleep? Should i be turning my tank light off at night..will it disrupt them if i leave it on?

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