Re: continous lighting or timed ?

[Wright Huntley <huntley1 at home_com>]

Jose Perez wrote:
> 
> Hi folks,
> 
> I am curious to what type of lighting setups people use here. Do you light
> the tanks for 8 hours, 12 hours or do you leave the lights on 24 hours ?
> Pros and Cons?

I once accidentally sterilized a line of guppies by leaving the lights on
24/7. I don't do that any more. 

Fish need their biorythms. The change of day length with season is an
important breeding trigger for some, I think, too. 

Another argument against constant light is that vascular plants need a dark
period of respiration (as opposed to photosynthesis) to grow. Simple algae
do not, and can outcompete the plants for food unless there's a daily
period.

Wright

-- 
Wright Huntley,  Fremont CA, USA,  510 494-8679     huntley1 at home_com

In retrospect it becomes clear that hindsight is definitely overrated.

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Follow-Ups:

• Re: continous lighting or timed ?
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• From: "Kent Carpenter" <kcarpen1 at rochester_rr.com>
• Re: continous lighting or timed ?
• From: "Tyrone Genade" <Tgenade at akad_sun.ac.za>

References:

• continous lighting or timed ?
• From: "Jose Perez" <joselperez at worldnet_att.net>

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