underwater filters

Discussion in 'Tank Talk' started by Shadow Mantis, Mar 6, 2006.

  1. Shadow Mantis

    Shadow Mantis Cuttlefish Registered

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    Hi

    I have been looking at the Fluval underwater filters. Would these be okay to use for a bimac and how do they work?

    Thank You
     
  2. Castor

    Castor Vampyroteuthis Supporter

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    Are you refering to the undergravel filters, if so, they aren't recommended. The Octo usually disturbs the filter, or might feel adeventurous, and make it's way down one of the uptakes. Octo's tend to disturb anything in the tank.

    Hope this helps.

    Felix.
     
  3. Shadow Mantis

    Shadow Mantis Cuttlefish Registered

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    No, this isn't an undergravel filter. It goes in the water and does not hang from the tank. I believe it is the Fluval 4 Underwater Filter.

    Thank You
     
  4. Illithid

    Illithid Vampyroteuthis Supporter

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    I have a Fluval 404 on my Bichir tank. It is commonly called a "canister filter". You have a 1 inch tube that goes in and out of the tank. This makes it easy to make ceph proof. It works well once I get it primed. I can just let it run and run and run.

    The only problem is the protein skimmer that you will also need. You will need a hang on the back type, whcih presents its own problems. But the filter should work fine.
     
  5. TidePool Geek

    TidePool Geek O. vulgaris Registered

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    Hi SM,

    First, just to be sure that we're all singing out of the same hymnal,
    here's a link to a description of the Fluval 4:
    http://www.aquariumguys.com/fluvalinternal3.html

    Assuming that you're following the recommendations about tank size
    (50+ gallon) for a bimac it would appear that you'll need at least two
    of these to provide sufficient filtration. Keep in mind that an
    octopus is a messy eater with a high metabolism and a big appetite.
    The consensus seems to be that you need two to three times the
    filtration capacity for an octopus than you would need for an
    equivalent amount of fish. The Fluval 4, which seems to be the largest
    of this type of filter available, is rated for a 57 gallon tank which
    means that two of them might be enough but one definitely wouldn't be.

    One other minor point. The pictures that I can find don't show
    sufficient detail to tell much about the intake screen. Octos have a
    reputation for injuring themselves on pump impellers so you might need
    to install some sort of auxiliary screen to keep curious arms out of
    harms way. Then again, the existing screen might be OK as is.

    You might want to do a Google newsgroups search on "Fluval 4". I just
    took a look and there seems to have been quite a lot of activity (530
    hits) about this filter so you ought to be able to learn something
    about its effectiveness and reliability.

    Submersively yours,

    Alex
     
  6. cthulhu77

    cthulhu77 Titanites Supporter

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    Good points, all. I've never been a huge Fluval fan, but some of the other members here are...but, as stated above, you are going to run into some issues with any "hang on the back" filtration.
     

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