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filter stress

  1. Betta Fish Bowls, Habitats, and Accessories
    I just moved my betta into a new 5.5tank last night. It's a lot larger than his old tank, and he won't stop freaking out. At first I assume it was because of the filter so I removed it, but he continued to swim frantically, and his stress lines are still there. I want to put the filter back...