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Old 20-04-2003, 07:14 AM
Ross Vandegrift
 
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Default Keeping red plants red

In article , Nestor 10 wrote:
Ross Vandegrift wrote in message
...

In my 20 gallon I've got some really nice looking Sunset Hygro
that grows in a brilliant red...


The most brilliant I've been able to get Sunset Hygro is under a mix of GE
Chroma 50 (Sunlight) and Ultra Daylight (6500K). This mix of lamps will
cause the Hygro to look almost neon pink.

Second-best shade of red comes with a mix of GroLux and Designer Warm Whites
by Philips/Sylvania.


This is probably closer to the combination of lighting I have now - One
is a Zoo-Med FloraSun (8900K version), the other is a GE Aqua-Rays (not
sure of the temp, it's the bulb that All Glass ships with their twin
strips lighting fixtures). The GE's CRI is really unbelievably awful.
I'd love to replace it.

Bacopa seems to be at its reddest during the first couple of hours of
"daylight" - almost as if the red were caused by the absorption of CO2
during the night (although I know that's not the reason). But it rarely
*stays* red through the course of the day unless you have a little green in
your lighting. Here, the Chroma 50s seem to work best.


Ah, very interesting - I'll have to pay attention to the times that I
see the Bacopa in "red mode" and compare that with when I put in
fertilizer. And perhaps I'll look into the Chroma 50's - sounds like
I could seriously benefit from replacing the Aqua-Suck tube.

--
Ross Vandegrift


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