Your fish will brighten up after some time too and it also has to do with the diet of the fish. How long do they stay in the corner? I have two Percula clownfish and they usually isolate themselves in a back corner of the tank when its all dark. When the lights come on they start to swim around and get active until it gets dark again. 8.4 is pretty much the upper limit for SW. I usually keep mine about 8.2 to 8.3.
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46 Gal Freshwater:
4 Asst Angels, 2 Serpae Tetras, 2 Black Skirt Tetras, 4 Rosey Barbs, 1 Pleco
20 Gal Saltwater:
2 Percula Clownfish, 2 Astrea Snails, 7 Hermit Crabs, 1 Peppermint shrimp, Flame Zoo
75 Gal Saltwater:
Clean up crew going: Turbo snails, Cerith snails, Nassarius snails, and Astrea snails. Red Legged Hermits too.
Current USA Nova Extreme Pro T5's 6x54W |