Are undergravel filters for aquariums good or bad? Explain.

  1. Nolapete profile image82
    Nolapeteposted 7 years ago

    Are undergravel filters for aquariums good or bad?  Explain.

  2. caninecrtitics profile image61
    caninecrtiticsposted 7 years ago

    I think they are bad because they do a good job filtering but all that bacteria good or bad sit under the aquarium just breeding and can cause problems if you don't tear it apart at least every 6 months.  use a external Filter

  3. profile image54
    SpaceAgeposted 7 years ago

    All waste collects under the undergravel filters.

 
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