RE: [APD] Red Pigment-K spectrum correlation experiment

["Sharon Frey" <sharonfrey at earthlink_net>]

Hi Phil,

Anecdotally I am trying to figure why my previously pink to red to bright
bronze hygrophilia polysperma 'Rosaervig' just is green.  The light is the
same.  The CO2 is a canister instead of DIY pop bottle yeast CO2.  And I did
change supplemental nutrients.

Sorry Phil, the measure of red in any plant is not light.  It is however
nutrients.

Most best in your quest.

Enjoy,

Sharon

-----Original Message-----
From: aquatic-plants-bounces at actwin_comsperma: Aquatic-Plants at actwin_com
Subject: [APD] Red Pigment-K spectrum correlation experiment


Hi folks,

I'm gathering data on the correlation netween red pigment in plants and the
light spectrum they're provided in our aquariums.

I remember seeing the question many times "How do I get my plants to be more
red?" The other day in class my prof. said something that clicked and got me
thinking.

My hypothesis is this: Since a plant produces red pigments to capture blue
light, then a plant grown under a higher K rating bulb (more blue light)
should be more red than if it were grown under a lower K bulb.

Please make mention of a general percentage of how red your plants are.  For
example, a stand of Ludwigia repens may only have a little red at 5%, while
100% would be completely and vividly red.  Right now I'm just trying to get
anecdotal information from hobbyists since the environments in each
individual aquarium is different than another this experiment isn't going to
take into account variances in nutrition.  All I'm interested in is spectrum
rating.  If you want to send NO3, CO2, and other measurements along for the
ride I'll be happy to track those too for fun.

Thanks,

Phil Edwards
Charlotte, NC

PS: You did enter your tank in the AGA this year, didn't you?  :)

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