Do you vacuum the tank when you water change? That might help some, if you aren't doing it already. Maybe you could add another filter or a powerhead or something to keep the water moving, might help stop the brown gunk from collecting.
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45g SW~percula clown, dusky jawfish, lubbock wrasse, antenna goby, hermits, snails
37g~angel, opaline gourami, australis rainbow, syno. euruptus, 6 kuhli loaches
10g~guppies, hoplo catfish, 3 kuhli loaches
5g~black CT betta |