Hi everyone. So, i just bought a rainbow wolf fish. It's about 4 inches now. After i put it in my tank about 2 weeks ago, my fish looks really hate the filter (i use HOB). It swimming around like worrying or scare about something. Even if i try to reduce the flow of my filter. And when i try to turn off the filter, my fish suddenly calm down. I use a planted tank (amazon sword mostly). Is my fish will be okay without filtration? I change the water every 3 days. Does it disturbed by the filter? Thanks for the answers.