DIY phosphate reactor

Discussion in 'Anything DIY Related' started by maj, 8 Jul 2010.

  1. maj

    maj

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    Iv been looking at reactors,namely a phosphate reactor and iv decided on building one.
    Just so tired of having a mesh bag with carbon,one with purigen and another with phos remover in.
    So now I atleast want to build a type of reactor for it.

    whats the essential characteristics behind it,like how much flow do I need to go thru this reactor chamber?
    How long should this reactor be?
    was thinking of simply just adding a pump to a closed off pvc piping,let it lay in the first chamber of the sump?

    any suggestions
     
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  3. jacquesb

    jacquesb Retired Moderator

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    For a phosphate reactor to work properly, Maj, you need to have very slow flow running through it - the flow should be barely enough to slightly move your phosphate remover media.

    You can make the reactor as long as you want to - I would typically say go for as big as you can fit (hide away)..... the bigger the reactor, the more media you can put in it, the longer it takes before the media needs to be replaced (making the core of refilling your reactor far less of a chore)....


    You can do that - but a true reactor design, is a pipe inside a pipe.... the centre pipe is the inlet, and goes through the top cap as the inlet - you connect the pipe to this thinner, inner pipe that sticks out of the enclosing cap. You also have a very short piece of pipe that also sticks out of the top enclosing reactor "cap". The is the outlet........

    I hope you understand?
     
  4. PeterWest

    PeterWest

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    Hi Jacques

    You don't perhaps have a thread or a website on how to make a reactor?

    Regards
    Peter
     
  5. jacquesb

    jacquesb Retired Moderator

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    Hi Peter - I will find one now and post it for you.
     
  6. jacquesb

    jacquesb Retired Moderator

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  7. maj

    maj Thread Starter

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    Thanks for the links Jacque,I fully understand what u explained im just toying with ideas.Do you think ishould have it lay in the sump,or outside of it.
    Wanting to make a nice sleek unit.
    What size pump would u recomend with say a 30cm long and10cm wide reactor chamber?
    Unit should pull water from 1st chamber in the sump,bypass the DSB and go straight into the return chamber,thats what im thinkin,or should it rather pass over dsb agen?
     
  8. jacquesb

    jacquesb Retired Moderator

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    Hi Maj - I would rather suggest that you use a pump to "push" water through the unit....

    For this size body, I would suggest a 500/600 liter per hour pump.

    IF you indeed have the space, inside your sump, it would be a lot neater to have the unit inside the sump. Less room for error where it can leak etc... (if it is outside your sump).
     
  9. maj

    maj Thread Starter

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    sorry man,i meant push water thru the reactor,but is it best to bypass the dsb into last chamber,or wont it matter at all.
    Will do this DIY this wknd,post some pics to see my progress.
    Thnks for input :thumbup:
     
  10. jacquesb

    jacquesb Retired Moderator

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    Hi Maj - I always had all my reactors in the last chamber of my sump, when I still had a "simple" sump :)
     
  11. keyaam

    keyaam

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    I have an idea for you. Will call you later
     
  12. 4age

    4age

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    Cant a fluidised bed filter be used as a reactor?
     
  13. jacquesb

    jacquesb Retired Moderator

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    Yes, 4Age - definitely.
     
  14. keyaam

    keyaam

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    yes
     
  15. maj

    maj Thread Starter

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    what exactly is the fluidised bed filter?
    Which is more effective?

    Shot keyaam,u always full of DIY ideas
     
  16. jacquesb

    jacquesb Retired Moderator

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    Maj - it was very popular a few years back. You still get them at LFS's. It has exactly the design that I explained to you, in words.

    It was used as a form of biological filtration, where water was pumped through some media that was highly porious.....
     
  17. 4age

    4age

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    I'm sure if u look around,you'l be able to find a 2nd hand one for cheap..i hav one..but i'm using it on a freshwater system..the guys used to run it with sand in..it almost exactly the same design as a phosphate reactor
     
  18. maj

    maj Thread Starter

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    oh ok,cool.
    always heard about it,never saw it before.Will google it
     
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