- Reaction score
- 1 year
So a filter change is coming up on both of my tanks I'm more worried about the 15 gallon its cycled more than the 50 gallon (though I question that because all it has left is ammonium that just wont go away) but my 15 gallon is just about ready for a filter change and how do i go about doing that since all the good bacteria is in the filter its self. Isnt changing the filter like starting the cycle all over again? What should I do?