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http://indianaquariumhobbyist.com/community/ :: View topic - DIY Co2 Reactor - Venturi Driven
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DIY Co2 Reactor - Venturi Driven

 
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Perikaruppan
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PostPosted: Tue Aug 25, 2009 10:16 am Post subject: DIY Co2 Reactor - Venturi Driven Reply with quote

 Due  to  popular  request  i  am  in  the  process  of  designing  a  Co2  reactor  that  will  have  co2  injected  into  the  reactor  using  a  DIY  venturi.  
 
 Been  using  this  venturi  to  driver  skimmers  (mixing  air  and  salt  water)  to  perfection.
 
 The  Venturi  shall  be  at  the  top  inlet  into  the  regular  3"  pipe  of  about  6"  length  -  not  at  the  center  but  at  a  side  so  that  it  creates  a  vortex  in  the  reactor.  The  co2  shall  be  inserted  through  the  venturi  and  they  shall  be  mixed  in  the  mixing  chamber  with  bio  balls  in  it.
 
 The  outlet  of  the  reactor  shall  be  connected  to  the  inlet  into  the  tank.
 
 i  am  not  good  in  drawings  so  no  diagrams  so  far...
 
 whether  will  design  work  to  perfection,  i  dont  know.  But  if  anyone  has  got  any  suggestions  do  let  me  know.
 
 Have  attached  2  images  of  the  venturi  design  and  the  venturi  at  work.  Instead  of  suckin  in  Air,  we  will  be  pumping  in  Co2.  and  instead  of  the  mix  going  into  the  motor  as  in  the  picture,  it  will  go  into  the  reactor  chamber.
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essabee
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PostPosted: Tue Aug 25, 2009 10:29 am Post subject: Re: DIY Co2 Reactor - Venturi Driven Reply with quote

 Attach  the  CO2  line  to  the  veturi  of  a  internal  filter  and  a  pet-bottle  with  the  bottom  cut  off  and  that  will  do  the  job  for  you  :-
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nature_lover
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PostPosted: Tue Aug 25, 2009 10:30 am Post subject: Re: DIY Co2 Reactor - Venturi Driven Reply with quote

 Two  DIY  Gurus  and  their  creations.   Clapping
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Perikaruppan
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PostPosted: Tue Aug 25, 2009 10:38 am Post subject: Re: DIY Co2 Reactor - Venturi Driven Reply with quote

 essabee,  i  am  looking  for  an  external  reactor!!!  and  hence  your  design  wont  be  possible  to  be  implemented.  As  i  am  looking  to  put  this  inline  from  the  outlet  of  the  canister  filter  so  that  an  extra  pump  is  avoided.
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retro_gk
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PostPosted: Tue Aug 25, 2009 11:08 am Post subject: Re: DIY Co2 Reactor - Venturi Driven Reply with quote

 You  don't  need  a  mixing  chamber  with  bio  balls  if  the  venturi  works  as  it  is  supposed  to.
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essabee
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PostPosted: Tue Aug 25, 2009 11:08 am Post subject: Re: DIY Co2 Reactor - Venturi Driven Reply with quote

 When  I  was  using  my  DIY  CO2,  the  gas  was  went  into  a  simple  reactor  run  by  the  output  of  my  powered  UGF.  Did  not  need  a  venturi,  and  worked.  I  made  it  with  2"  PVC  pipe  and  the  inlet  for  the  gas  was  at  the  entrance  of  the  water  into  the  2"  reactor  which  a  natural  venturi  point.
 
 Although  my  reactor  was  inside  the  tank,  it  need  not  be.
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Perikaruppan
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PostPosted: Tue Aug 25, 2009 1:21 pm Post subject: Re: DIY Co2 Reactor - Venturi Driven Reply with quote

 Rahul,
 when  the  Co2  mixed  with  the  Water,  they  will  be  in  as  minuscule  bubbles..  when  there  is  more  time  for  the  exchange  in  the  reactor  will  the  balls  or  some  media  to  increase  the  contact  time  btwn  the  Co2  and  water  there  will  be  maximum  absorption  of  Co2  in  water...  thats  why  the  reaction  chamber.
 
 If  i  let  it  in  directly  into  the  tank,  it  is  similar  to  that  of  a  diffuser  plate.  there  will  be  co2  loss!!!  not  that  we  are  100%  perfectionist  in  all..  but  atleast  try  to  be...
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retro_gk
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PostPosted: Tue Aug 25, 2009 1:58 pm Post subject: Re: DIY Co2 Reactor - Venturi Driven Reply with quote

 If  I  understand  venturi  based  CO2  dispersal  correctly,  the  dissolution  rate  is  high  enough  to  satisfy  just  about  anything  you  want  to  grow  without  any  additional  contact  time.  
 
 You  have  to  tinker  with  the  flow  through  the  venturi  to  get  the  optimal  dissolution.
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venket
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PostPosted: Tue Aug 25, 2009 4:08 pm Post subject: Re: DIY Co2 Reactor - Venturi Driven Reply with quote

 in  that  case  then,  we  just  need  to  test  it  in  a  planted  tank...  any  planted  guys  are  there  for  testing  the  Venturi?  Very Happy
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nature_lover
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PostPosted: Tue Aug 25, 2009 5:34 pm Post subject: Re: DIY Co2 Reactor - Venturi Driven Reply with quote

 Venket,  aren't  you  one?
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essabee
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PostPosted: Tue Aug 25, 2009 7:07 pm Post subject: Re: DIY Co2 Reactor - Venturi Driven Reply with quote

 http://www.ce.utexas.edu/prof/kinnas/319LAB/Applets/Venturi/venturi.html
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venket
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PostPosted: Tue Aug 25, 2009 7:51 pm Post subject: Re: DIY Co2 Reactor - Venturi Driven Reply with quote

 Suraj,
 
 PK  posted  from  my  comp  without  knowing  I  was  logged  in   Very Happy  
 
 -Venket
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