Visually, I find the lamp very appealing.
The clamp holder does not have the stability centremost impression that he is similar to the holder of the Dennerle nano lamps. Bin keeps curious how long this. The holder of my two Dennerle lamps have held about 8 months until the plastic is broken.
For a 30l Nano pool I recommend this lamp is not as it should be only two of that sort.
But what I have to say is that moonlight is sufficient. The aquarium is a beautiful blue illuminated.
Conclusion: deductions in the points brightness and stability of the holder and a plus in terms of appearance and usability.