Light tubes

Michael Hasemann (
Wed, 1 Feb 1995 09:50:33 +0200 (EET)

> Lower energy flourescents: I use these almost exclusively all my
> CP's, and they work great. They seem to be a bit high in the
> yellows so I try to work in a bulb with a more purple spectrum
> so the plants look cooler but they don't need it.
> Dave Evans

Uwe told me that he mixes tubes (mind: normal tubes not growlux etc.)
of different types (e.g. coldwhite and warmwhite).

He prefers to mix color codes (25,20,19) with (33,32,30). He
says he is quite successful.


P.S.: I have not seen yet any energy saving lamps (tubes with bulb
socket E27) sold with different color codes.

  Michael Hasemann | Technical Research Centre of Finland - Automation
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