Betta Fish Forum banner
how often
1-1 of 1 Results
  1. Betta Fish Care
    I have heard that you have to replace it every 4-6 weeks, but then others say that you can't because you throw away beneficial bacteria. I have a 5gal mini bow tank that came with a filter. The intake tube is submerged in water, and the place where the media goes is above water as well as the...
1-1 of 1 Results