Re: [GSAS-Member] Subject: Which Bulb

[Shango Los <shango@shangolos.com>]

Is there any reason to use an actinic or 50/50 bulb with freshwater tanks?
They seem to be only for marine.


On 11/23/08 3:27 PM, "Erik Olson" <erik@thekrib.com> wrote:

> On Sun, 23 Nov 2008, Seattle_Aquarist wrote:
> 
>> comment on 5500k makes sense, the lower spectrum promotes flowering not
>> growth.  Maybe Paul, Erik, and some of our other "plant people" could share
>> what they think?
> 
> I thought the spectrum promoting flowering vs. growth was debunked (or the
> effect was found to be marginal) years ago.  In any case, I usually get
> bulbs that look good to the viewer as opposed to the plants; I prefer
> 6500K, which is cloest-looking to natural sunlight, and if I can't get
> 6500K, I get 5000K.
> 
>    - Erik

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