90g Fowlr

ppm411

Member
Hope you find this useful.
Various K ratings, and the reasons for using them.
5500K (Bottom end of acceptable CRI)
Reason: Frequencies below
5500K promote algae blooms
as these algaes prefer less
blue-white light and lean to
the red-yellow absorption
spectrum.
6500K (Middle of the road CRI)
Reason: Best all-around
starter frequency, often
used in conjunction like the
5500K series, with actinic
blue tubes.
10,000K (Upper end of the advanced or special-need frequencies)
Reason: Incredible amounts
of deep-penetrating
blue-white light, making
them ideal for deeper tanks
and simulating deeper reef
environments.
20,000K (The upper end of deep water simulation)
Reason: Because we can.
 
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