Given the tank was empty, I started with no lighting, for like a day or two. Then, when I first turned on the light, I dimmed it so much you could hardly see the light was on. Over the days, I gradually made the light brighter, and it's now at the normal percentage. The led is pretty bad though, 4x 3w white powerleds, and 2x 3w blue powerleds, this is because the tank was supposed to be like a sort of plague coral display (with GSP and maybe Xenia, nothing else). I wanted a bit of movement color in my reptile room, it's not a serious tank, unlike my 40g.
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