Pre-filter Sponge

Discussion in 'Filters and Filtration' started by LynnwoodFishDad, Jun 21, 2019.

  1. LynnwoodFishDad

    LynnwoodFishDadValued MemberMember

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    i am running an AquaClear 50 in my 36 gallon bowfront. I’ve removed the carbon and have a bag of crushed coral in it as I have super soft water.

    Anyway, one of my Kuhli loaches loves to swim up the intake pipe and I’ve pulled it out of the filter 4 times. I bought a pre-filter sponge at my LFS to solve that problem.

    I’ve noticed that my water is getting cloudier with small debris. Any advice?
     
  2. PeteStevers

    PeteSteversWell Known MemberMember

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    He fits through the "mesh" of the intake? Must be a very small kuhli. I've used those pre-filters as well as I have RCS and they end up clogging rather quickly. You really need to squeeze the **** out of them so they will let water pass through. I had to do this every couple of weeks to keep the water flowing properly through the filter. I ultimately ended up purchasing a canister filter and a stainless mesh pre-filter that doesn't clog.
     
  3. OP
    OP
    LynnwoodFishDad

    LynnwoodFishDadValued MemberMember

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    The “mesh” is a series of vertical inlets and I’m hoping he got fat enough last time that he doesn’t fit anymore. LOL
     
  4. Kevin Dennis

    Kevin DennisValued MemberMember

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    I'm not sure what prefilter you are using.

    I've used the Fluval Edge prefilter sponges on aquaclear 20 and 70 models. I have now stopped using them because they clog so quickly. Especially on a 300gph filter, they can almost completely stop filter flow in 2 or 3 days.

    That's why your water is cloudy.

    A more "coarse" filter sponge is the solution but I have not found one.
     
  5. OP
    OP
    LynnwoodFishDad

    LynnwoodFishDadValued MemberMember

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    I removed it after posting and it is clearing up somewhat. I haven’t found anything more corse than what I have.
     
  6. jmaldo

    jmaldoWell Known MemberMember

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  7. OP
    OP
    LynnwoodFishDad

    LynnwoodFishDadValued MemberMember

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    Sunday is water change day! 25% every week.

    Did you just stuff the filter box with it?
     
  8. Islandvic

    IslandvicWell Known MemberMember

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    @LynnwoodFishDad , here are pics of 2 different types of sponge pre-filters I use......


    From Petsmart....




    From the interweb.....

    ATI Hydro Max III



    Kensfish.com, Jehmco.com has the best prices and selection for ATI products.


    Here are some pics of how Polyfil can be used that @jmaldo suggested.








    In the pics, the loose fill version of the Polyfil was used.

    I now use the batting version, and prefer it.
     
  9. OP
    OP
    LynnwoodFishDad

    LynnwoodFishDadValued MemberMember

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    I’m going to stuff a mesh bag and stuff it between my bio material and crushed coral. 4 layers work! LOL
     
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