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  1. #1
    Senior Member volitan's Avatar
    Join Date
    Dec 2003

    cycling a new tank with old stuff

    I just started my new 40 gallon with 1/2 of the water was my old tank water...i have new substrate and plenty of live rock that has been in my old tank...just wondering if i need to be concerned about my tank recycling again?

  2. #2
    Senior Member LadyBug's Avatar
    Join Date
    May 2004

    I would of used the subtrate also, as that is where your beneficial bacteria is.

    When ever I start a new FW tank I clean the gravel from an establish tank. Ya know all that gunk.....well that gunk is full of beneficial bacteria....looks very messy for a few hours, but with my freshwater tanks, I have never lost any fish this way.


  3. #3
    Join Date
    Apr 2004
    Hey Derik,
    I would agree with Ladybug in that you would have lost some bacteria in the substrate. However your live rock will be well established and you should be OK. Depending on the "load" you put on your system initially, you may not go through a cycle. Your only going to get enough bacteria to colonize on your rock & substrate as there is ammonia being produced in the tank. I quote OSD: it's all about balance.

  4. #4
    Senior Member reefmutt's Avatar
    Join Date
    Oct 2003
    with the old live rock in there, you'll probably be fine, just don't load up the new tank too quickly, and if you still have your old gravel, add a couple of handfulls into the new set up

    Old system torn down to make a playroom.. planning a 62x42x28 high

  5. #5
    Join Date
    Apr 2004
    I have also heard that if you take some of the nasty stuff in your old filter and put it into the new one, that helps to kick start the filter side of a new set up.

  6. #6
    Senior Member volitan's Avatar
    Join Date
    Dec 2003
    a buddy of mine gave me some substrate and dirty water and my ammonia is 0..and i have a lionfish emperor and grouper in a 40 galons ahaha

  7. #7
    Senior Member piatchie's Avatar
    Join Date
    Nov 2004
    Just keep your eye on the amonia! But I think you will be o.k. When I moved I changed my substrate and put my fish back in the same day and never had a hitch just watch it closely is all!

    Why is it called "cargo" when it goes by ship, and "shipment" when it goes by car?

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