Carbon in fishless cycle

Discussion in 'Aquarium Nitrogen Cycle' started by Jswin, Jul 19, 2015.

  1. JswinWell Known MemberMember

    When you're doing fishless cycle do you remove the carbon from the filter? Essentially that would make the bacteria work harder correct? I have only done fish-in cycles in the past so I'm new at this way, I seeded some media out of my other tanks filter so hopefully it won't take long.
  2. matsungitWell Known MemberMember

  3. Dom90Fishlore VIPMember

    It shouldn't matter whether you leave the activated carbon in or not. In fact, the mesh bag with the carbon gives more surface area for the bacteria to grow on.

    Sent from my iPhone using Fish Lore Aquarium Fish Forum
  4. matsungitWell Known MemberMember

    I agree that you will attain a full cycle whether you use AC or not. My point was to avoid uncertainty that carbon may be "stealing" some ammonia that's meant for the beneficial bacteria. At least you can be sure that the ammonia, nitrite, and nitrate readings are accurate and have not been slightly reduced because of the AC. Use more bio media in place of the AC if possible. Later when your tank has been cycled you can use AC for cleaner water conditions.

    If for example not using AC is unavoidable, for example filters that have all-in-one cartridges then by all means use it but do not replace it.
  5. Dom90Fishlore VIPMember

    Yes I agree with you there. When I was running Aqueon filters with their all-in-one cartridges, it felt like it took forever to cycle the tank. I've had much faster cycles from scratch with other brands, such as those that actually use bio media/ceramic rings like the AquaClears.

    Sent from my iPhone using Fish Lore Aquarium Fish Forum
  6. JswinWell Known MemberMember

    Yeah. I'm running my aquaclear currently. I to the AC out and have a canister coming this week. I plan on overstocking this cichlids tank so I got lots of filtration

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