This light is now fitted as the central light in my Arcadia luminaire on tank 2 and I must say that I am impressed with both the ambience that it creates, and also the effect that it would appear to have on the activity of the tank's occupants.

Here is a photo of tanks 1 & 2 just to show the difference. Tank 1 has the ordinary Arcadia Freshwater tube, and tank 2 (on the left) has the Blue moon tube (the other 2 tubes were turned off in the photo).

My current thinking is to have the 2 freshwater lights on during the day, and to have the blue moon on during the evening. This means that I might get a bit more activity from my Plec, which otherwise spends a lot of his time in 'his' log.

Does anyone else have experience of this lighting and, if so, do you have any opinions that you would like to share?