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  1. #1

    Established Tanks-cleaning

    How often do you have to change the water in established tanks and change the filter media? I have about four tanks that are all established that are up and running. I haven't had much time to change the water, I've only been adding water to them. It's been too long that I've been away from these types of forums. Thanks in advance.

  2. #2

    What types of tanks do you have? I have a 100 gal tank with one oscar and have to do 10% water change every week. Plus add water because of evaporation. Granted my tank is underfiltered a bit. So it matters how big your tank is and what you have for filtration as well as what type of fish. Oscars are very dirty fish :wink: .
    Blessed Be

    Salem Witch Child

  3. #3
    For the past 3 years, I've changed the water in my 4 year old 29gal only 6 times. Fish and corals are still alive and well. I topped off with tapwater all that time so my algae growth is a bit of a problem, but the tank didn't crash, and it doesn't register ANY nitrates / ammonia. I've been borderline ignoring it.

    Having said that, I just started changing the water weekly (20%) and my corals are looking better and the algae is starting to get under control.
    [URL=]marine fish tank[/URL]



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