Re: [AGA Member] Red Pigment-K spectrum experiment

["Phil Edwards" <biotypical@hotmail.com>]

I have some Lobelia that is written up as red under low intensity
lighting..  put one clump in a small tank with low lights and the
upper leaves did turn red
-Dennis S.


How far is it from the lights in each tank?  That affects
how much light it's getting as much as the wpg does.
-Scott H.


Dennis,

I would ask the same question Scott did.  Is the tank over 12" tall and are 
you using NO Fluorescent lights?

If so, that combination can definately lead to redding of leaves.  Since the 
red through green spectra have for one reason or another been diffused your 
plant is increaing it's Anthocyanin output to make best use of what light it 
is getting....the stronger blue spectrum.  This happens all the time in 
thick jungles, most lower strata plants will have dark red undersides to 
their leaves as the blue light is the only thing penetrating to them.

It's not surprising that your Lobelia cardinalis, which is normally green, 
would either a: get rid of it's chlorophyll, b: increase anthocyanin, or c: 
both under low intensity lighting.

Best,
Phil Edwards
Charlotte, NC

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