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Jenna asked in PetsFish · 3 months ago

Can I use a 5.5 gallon fish tank filter on a 20 gallon? (No rude comments) ?

I was given a 5.5 gallon fish tank filter and a 20 gallon tank for free as well as an air pump 

6 Answers

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  • Ocimom
    Lv 7
    3 months ago

    Nope.  Sorry but its too small.

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  • Anonymous
    3 months ago

    You CAN, but it won't filter the water sufficiently for the fish to survive.

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  • 3 months ago

    You can. But you won't be turning over as much water per hour, you won't be building up healthy bacteria as fast.  You won't have much room for extra bio material, And a lot of filters for 5 gallon tanks are junk.  It is better to have more filtration then to have less,  I would get a filter for at least a 30 gallon tank.  Marineland filterers are reliable and inexpensive.  

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  • 3 months ago

    Depends on what you have in the tank (Fish, plants, shrimp) but I'd say no. A filter made for a 5.5 gallon tank wouldn't do well filtering a 20 gallon tank.

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  • 3 months ago

    I would not do that......................

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  • Anonymous
    3 months ago

    I would not recommend doing that. The minimum you should use is at least a 10-gallon filter.

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