Re: NANFA-- My nanometers request answered

Bob Bock (bockhouse_at_earthlink.net)
Sun, 21 Jan 2001 13:46:40 -0500

Either of you remember what wavelength anthocyanin needs? I assume that's
what makes red algae red.
----- Original Message -----
From: "Bruce Stallsmith" <fundulus_at_hotmail.com>
To: <nanfa_at_aquaria.net>
Sent: Saturday, January 20, 2001 9:22 PM
Subject: Re: NANFA-- My nanometers request answered

> >Bruce, nice site and good tech info but i disagree with him about broad
> >spectrum lighting. after more than 30 years of growing plants of all
types
> >i
> >have found that wide spectrum light will always out perform lights that
are
> >just primed for photosynthesis there is some thought on this in
scientific
> >literature and it has to do with pigments in plants that we can't see
that
> >convert light that chlorophyll can't see into energy for the plants. it
can
> >be readily demonstrated for both infra read and ultra violet and there is
> >some reason to suspect it occurs in light in the mid range too. I know
that
> >broad spectrum lights do indeed result in better more regular and natural
> >growth of plants of all types.
> >
> >moon
>
> Do you mean accessory pigments such as xanthophyll? Those should all be
> between 400 and 700 nm rather than in the IR or UV ranges. I can't
disagree
> with your experience in broad spectrum lights, whatever works works. But I
> think that Busko's criticism of broad spectrum lights is more that they're
> inefficient through producing unnecessary types of light, rather than that
> they don't work. This is especially true of metal halides, which use large
> amounts of electricity, produce lots of electromagnetic radiation, but
only
> some of that EM is usable to plants as "light". But, they DO produce LOTS
of
> light as an absolute measure, so they should work.
>
> (I'm speaking as someone who has had limited success with aquatic plants,
> although the _Coleus_ and passionflower plants in my greenhouse are
growing
> like weeds in natural light.)
>
>
> --Bruce Stallsmith
> Huntsville, AL
>
> "George W. WHAT?!"
>
> _________________________________________________________________
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>
>
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/----------------------------------------------------------------------------- /"Unless stated otherwise, comments made on this list do not necessarily / reflect the beliefs or goals of the North American Native Fishes / Association" / This is the discussion list of the North American Native Fishes Association / nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word / subscribe, unsubscribe, or help in the body (not subject) of an email to / nanfa-request_at_aquaria.net. For a digest version, send the command to / nanfa-digest-request_at_aquaria.net instead. / For more information about NANFA, visit our web page, http://www.nanfa.org