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[Johnny Reefer]

Originally Posted by christyf5

I thought the idea behind moonlights wasn't that it was supposed to illuminate your tank for night viewing but that it was supposed to simulate the light of the moon (which isn't very bright) for lunar cycles etc. Ican't remember what brand mine was but it just barely lights the tank but gives a neat effect, I like it that way

Just my two cents.

Couldn't agree more.
Mine barely light the tanks too, giving the neat effect.
But they do penetrate more than just a couple of inches.
Right to the bottom, actually. (24").
The Reef tank is cool for not only the overall effect, but the colour effect they have on the corals too.
In my Cichlid tank, there is just enough light to see the fish as shadows (for lack of a better description) slowly swimming about.
It's just as relaxing to watch a tank under moonlights as it is with full blown lights, IMO.