Join Date: Mar 2013
Location: Southern Indiana
Be very careful with CRI ratings.
Higher is better...usually.
This is because we live our lives in air. CRI is measured in air.
We look at our aquariums through water, which filters out the various spectra at different rates. Red light, for instance is filtered out in a shorter distance than blue light.
So in theory, an aquarium lighting fixture could have a slightly lower CRI, due to increased red output, but once it is filtered by the water (both on the way to the plants, and then reflected out to our eyes) its "effective" CRI might be slightly higher than another fixture.
Just food for thought.