Modified Sponge Filters

Discussion in 'D.I.Y.' started by Philip, Oct 18, 2006.

  1. Philip
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    Philip Algae harvester

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    This conversion was prompted for the simple reasons, extra biological surface area and easier to clean.
    I will explain the procedure and tools required for all those that similar filters, ideal for discus breeders etc.
    The tools required for the conversion:
    1. Heat gun ( not blow torch that operates via gas)
    2. 32mm PVC piping
    3. A plumbers copper pipe cutter/ hacksaw
    4. PVC cement/glue
    5. Tape measure.
    Procedure:

    Cut the 32mm PVC piping into 50mm lengths.
    Apply heat via heat gun to one side, making sure you do not burn yourself. Also do not apply too much heat that the PVC starts burning/ going a yellow-brown color.
    Once heated gentle push the heated area over the disk that fits onto base and insert in a bucket of water to cool off quicker.
    PVC weld/glue the opposite end to the heavy base and leave to stand for 16hrs to cure properly.
    The sponge inserts that push inside the sponge can be PVC glued to keep them permanently together.
    Another idea to increase biological mass is to use another Boyu sponge filters sponge and insert to double up as illustrated.
    Now once the glue has cured assemble sponge and presoak the sponge by squeezing all air trapped inside sponge to prevent the sponge and entire unit from floating.
    If you have any questions, please feel free to ask.
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    The reason for the increase in height was that remaining uneaten food made it difficult to get to when siphoning breeding tanks. It makes all the difference.
     
  2. Andre
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    Andre Green fingers

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    Nice one Philip

    I also realised that the detritus quickly assembles under the filter as I am using one of these in one of my tanks.
     
  3. Philip
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    Philip Algae harvester

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    Andre, I will help you, if you want to change yours. Supply the material and that is it.
     
  4. Ryan
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    Ryan Green fingers

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    This looks like quite a useful modification.

    Does anyone know of a way to drive one of these filters with a powerhead? I hate the noise that airpumps make. Surely the only thing the bubbles do is cause water to flow through the sponge, so there must be a way to rig a powerhead to do this.
     
  5. Discus
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    Discus Algae harvester

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    yep. jam the uplift pipe onto the powerhead. easy peasy.
     
  6. Ryan
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    Ryan Green fingers

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    The catch is that this is one of those submersible pumps that doesn't have an inlet pipe. I also do not want to put the pump's outlet pipe onto the filter because then all the gunk gets stuck in the power head and it will get jammed.
     
  7. Anonymous
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    The sponge will filter out most of the gunk though. :)

    On some of my powerheads there is a cover that clips off to reveal the inlet. But other than that I have no idea what you would do. Reverse the polarity of the magnets inside the pump and turn the outlet into an inlet. :D

    Pics would help though.
     

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