Cycling a sponge filter

  1. codyrex97 Well Known Member Member

    Hey guys! A sponge filter I ordered came in today and I have it running in my tank right next to my HOB filter. I was thinking of cycling this sponge to use in a future tank. Is it as simple as just letting it run in my tank like normal and it'll eventually gather the beneficial bacteria?
     
  2. ashleyb Member Member

    Yep! I did the same when I switched to sponges and I haven't regretted it. In my tank the bacteria actually split between the two filters and caused a mini (two day) cycle, which I wasn't expecting but it was extremely manageable. Good luck!
     

  3. TexasDomer Fishlore Legend Member

    The mini cycle shouldn't have been caused by simply adding a sponge filter. Something else must have happened.

    I do the same thing. When I get a new sponge filter, I run it in my main tank. I keep it running in my main tank until I need to move it over when I need to QT.
     
  4. ashleyb Member Member

    No, I meant when I removed the HOB and ran the sponge alone, the bacteria had split between the two and it caused a two day disruption when I finally removed the HOB.

    Sorry, I didn't make that very clear lol