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[APD] Re: Dennerle Light Cycle

Laith, I'm generally a lurker here and certainly no expert on *anything* at APD, however, I can tell you that I have one 100% unplanted low-light tank (it's home to my herbivore Silver Dollars that eat anything green) that had had a horrible algae problem. In desperation, I moved to the Dennerle light cycle and have been amazingly algae-free ever since.  (No need to feel sorry for my Silver Dollars - they're fed the overabundance of frogbit from other tanks.)

Growing old is inevitable; 
growing up is optional.

> Message: 4
> Date: Tue, 8 Jun 2004 14:00:57 +0200
> From: "Laith Arif" <laith at swissonline_ch>
> Subject: [APD] Dennerle Light Cycle?
> To: <aquatic-plants at actwin_com>
> Has anyone ever tried Dennerle's recommended light cycle?  They call it a
> "mid-day pause".
> They recommend 4 to 5 hours of light, lights off for 2 to 4 hours and then 4
> to 7 hours of light again.  During the "pause" one should still have some
> light in the room (window or lamp).  Light on times must be at least 4 hours
> long each time.
> Dennerle's reasoning is that as it has no negative effect on plants or fish
> but does have a negative impact on algae, it is good.
> Before I try this, wanted some opinions or experiences with this...
> Thanks,
> Laith
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