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http://indianaquariumhobbyist.com/community/ :: View topic - Large External CO2 Reactor
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Large External CO2 Reactor
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Madan
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PostPosted: Sat Jul 05, 2008 7:00 pm Post subject: Large External CO2 Reactor Reply with quote

 Having  trouble  with  my  previous  modified  external  CO2  reactor,  which  would  drop  in  efficiency  as  the  Eheim  2215  canister  driving  it  got  clogged,  I  was  on  the  look  out  for  a  something  good  to  convert  into  an  external  reactor.  I  wanted  an  independent  pump  driving  the  reactor  so  that  in  my  absence  filter  cleaning  will  not  be  required.  Very Happy  
 
 I  found  the  Jaqno  Prefilter  Canister  with  Sam  at  Aquatika  2008.  In  fact  Uttam,  Suhailur  and  myself  saw  the  prefilter  at  the  same  time   Very Happy,  had  a  short  discussion,  and  bought  all  four  available  with  Sam.  I  have  comissioned  mine  today,  Suhail  and  Uttam  will  probably  take  a  look  tomorrow  and  get  their's  going.
 
 Here  is  the  Jaqno  Prefilter
 
 
 The  Eheim  Compact+  2000  variable  delivery  pump  (you  can  vary  the  pump  output  from  1000-2000  l/hr)  to  drive  the  reactor.
 
 
 
 The  Eheim  Compact+  2000   Takes  suction  from  the  tank  and  delivers  the  water  to  the  top  of  the  reactor.  The  smaller  tubing  you  see  is  the  CO2  tubing  connected  to  the  top  of  the  reactor.  The  return  from  the  bottom  of  the  reactor  is  led  back  to  the  tank.
 
 
 The  reactor  is  filled  with  bio-balls  about  20  of  them  that  I  had  lying  around,  to  create  as  much  impedence  to  water  flow  as  possible  and  allow  for  increased  contact  time.
 
 I  am  using  this  reactor  for  my  27  x  18  x  18  inch  tanks.  The  Pump  delivery  is  set  at  about  1200  l/hr.  You  can  increase  the  pump  delivery  to  maximum  2000  l/hr  and  use  it  for  large  (6  feet  length)  tanks  too.
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Madan
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PostPosted: Sat Jul 05, 2008 7:49 pm Post subject: Re: Large External CO2 Reactor Reply with quote

 To  connect  the  CO2  tubing,  I  drilled  a  hole  in  the  cover  of  the  canister,  and  threaded  in  a  bulkhead  fitting  into  the  hole,  finally  sealing  it  with  super  glue.  This  bulkhead  fitting  is  by  Festo.
 
 
 
 
 Internally  a  small  length  of  tubing  delivers  CO2  lower  into  the  reactor  to  allow  better  mixing.
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psimhan
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PostPosted: Sat Jul 05, 2008 9:53 pm Post subject: Re: Large External CO2 Reactor Reply with quote

 This  is  actually  one  hell  of  an  idea,  Madan.  A  semi  DIY  reactor.
 I  bet  its  a  lot  cheaper  than  a  pro  made  reactor  and  fairly  simple  to  make.
 Is  there  a  sponge  prefilter  at  the  intake,  because  the  bioballs  may  trap  detritus  and  clog?
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Madan
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PostPosted: Sat Jul 05, 2008 10:05 pm Post subject: Re: Large External CO2 Reactor Reply with quote

 Put  in  whatever  you  like  Pradeep.  Sponge,  wire  mesh  anything.
 
 This  costs  about  1/10  of  a  similar  one  by  Aqua  Medic.
 
 The  pump  is  common  to  both  reactors  and  ofcourse  will  be  extra.
 
 The  only  DIY  here  is  drill  a  hole  and  fit  a  bulkhead  union  for  the  CO2  tubing,  took  me  2  minutes  to  fit  and  another  5  mins  for  the  Superglue  to  dry.  I  didn't  need  the  super  glue,  but  used  it  anyway.
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shishirkamat
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PostPosted: Sat Jul 05, 2008 10:33 pm Post subject: Re: Large External CO2 Reactor Reply with quote

 Great  DIY  Idea  Madan,Really  Innovative,
 Regards
 Shishir  Kamat
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Prem kk
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PostPosted: Sun Jul 06, 2008 9:50 am Post subject: Re: Large External CO2 Reactor Reply with quote

 Great  idea  Madan.  Bala  and  I  were  discussing  yesterday  on  how  to  make  an  effective  reactor  for  my  6  foot  planted  tank  and  there  you  were  bang  on  target.  Thanks  a  ton.  
 
 Regards,
 Prem
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Madan
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PostPosted: Sun Jul 06, 2008 11:09 am Post subject: Re: Large External CO2 Reactor Reply with quote

 Prem  for  a  6  footer,  split  the  return  from  the  reactor  using  a  Y  connector  and  direct  the  two  returns  from  either  ends  of  the  tank.  Use  a  high  capacity  pump  like  the  Eheim  Compact+  2000  or  better  the  3000  model.
 
 Suhailur  had  just  one  reactor  on  his  6  footer  and  his  tank  did  not  do  well  at  all  for  6  +  months,  until  he  added  a  second  reactor  for  better  CO2  distribution  and  higher  CO2  levels.
 
 I  had  not  seen  his  tank,  but  from  what  he  and  Harshal  and  others  who  did  see  the  tank  earlier  in  the  bad  days  say,  the  addition  of  a  second  reactor  brought  about  the  excellent  growth  in  just  3  months  and  algae  all  but  vanished.
 
 Prem,  Sam  has  many  more  in  stock,  you  could  pick  up  the  prefilter  from  him.  The  Eheim  pumps  are  available  with  Adip,  Mayur,  Deepak,  and  possibly  with  Sam  and  other  dealers  in  Chennai.
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PostPosted: Sun Jul 06, 2008 4:51 pm Post subject: Re: Large External CO2 Reactor Reply with quote

 Thanks  Madan.  I  just  picked  up  the  Pre-filter  from  Aquastar.  If  I  understand  your  point  right  I  should  have  one  prefilter,  Use  a  Y  connector  at  the  output  of  the  prefilter  and  ensure  the  flow  is  at  both  ends  of  the  tank.  Please  correct  me  if  I  am  wrong.
 
 I  am  also  hunting  for  the  bulk  head  fitting  hopefully  will  find  one  today.
 
 Thanks  once  again  for  your  idea.
 
 Regards,
 Prem
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Madan
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PostPosted: Sun Jul 06, 2008 6:09 pm Post subject: Re: Large External CO2 Reactor Reply with quote

 In  case  you  don't  find  a  bulkhead  fitting  for  the  CO2  connection  use  a  plastic  straight  pipe  connector  that  you  get  for  airlines.  The  same  one  people  use  for  DIY  CO2  setups  to  lead  CO2  to  the  tank.
 
 You  can  seal  this  too  pretty  well  using  Super  Glue.  Careful  when  you  drill  the  hole  in  the  cover.
 
 I  could  not  find  any  straight  connectors  at  home,  and  these  old  bulkhead  fittings  were  lying  around  handy,  so  I  put  them  to  use.  Very Happy
 
 The  rest   of  what  you  wrote  is  spot  on.
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PostPosted: Sun Jul 06, 2008 8:23 pm Post subject: Re: Large External CO2 Reactor Reply with quote

 Dear  Madan,  Thanks  a  lot  for  the  great  idea  of  making  a  co2  reactor  Clapping  I  have  contacted  Sam   for  the  things  to  make  the  reactor.Meanwhile   I  saw  in  Youtube  about  a  co2  ractor.Hope  this  will  be  of  use.Please  tell  your  comments  about  the  same  .I  am  giving  below  the  link      http://www.youtube.com/watch?v=mQRgJo1cwIA&feature=related
 
 With  regards
 Venkatavijayan
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PostPosted: Sun Jul 06, 2008 10:42 pm Post subject: Re: Large External CO2 Reactor Reply with quote

 ..Madan  Sir,
 I  would  love  to  make  this  DIY  Co2  reactor  for  my  4ftr.
 But  the  old  issue  is  I  dont  know  howto  get  the  Jaqno  Prefilter  or  a  similar  airtight  container  with  pre-fitted  inlet  and  outlet.Any  more  suggestions  on  that?
 And  like  Prem  where  to  find  this  bulkhead  fitting  by  Festo.
 
 I  waould  like  an  external  reactor  be  it  DIY  or  no,  so  all  the  guidance  is  needed  and  appriciated.
 
 Have  a  nice  night.
 Cheers,
 Nanu


Last edited by Nanu on Mon Jul 07, 2008 12:01 am; edited 1 time in total
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tinasam
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PostPosted: Sun Jul 06, 2008 10:44 pm Post subject: Re: Large External CO2 Reactor Reply with quote

 i  have  a  doubt  why  your  having  the  water  inlet  on  the  top  cause  usually  it  'll  be  in  the  bottom  
 regards
 sam
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PostPosted: Sun Jul 06, 2008 11:17 pm Post subject: Re: Large External CO2 Reactor Reply with quote

 Sam,
 
 If  you  see  how  Madan  has  connected  the  Co2  tube  inside  you  will  know  that  Co2  bubbles  travels  up  in  water  ,  if  you  connect  the  water  inlet  in  bottom  ,  the  Co2  bubbles  along  with  water  will  escape  through  the  outlet  on  top  without  mixing  in  water,  making  the  Reactor  useless  ...  so  for  a  Co2  Reactor  this  is  the  best  method  of  mixing  ...  by  pushing  water  from  Top  and  since  the  Co2   bubbles  also  come  up  and  get  mixed  with  the  water  on  Top  then  comes  out  through  the  outlet  on  bottom   thus  getting  a  good  Co2  enriched  water  for  Planted  Tanks  !!
 
 Hope  u  got  the  point  .....  Thumb Up  
 
 Regds
 VRaghu.
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ravi
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PostPosted: Mon Jul 07, 2008 2:38 pm Post subject: Re: Large External CO2 Reactor Reply with quote

 Yo  Madan,
 
 Is  it  ok  to  avoid  the  additional  pump  &  use  it  this  way  ?
 
 tank  ->  external  reactor  ->  Eheim  filter  ->  tank  ?
 
 Will  this  work  efficiently  ?
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PostPosted: Mon Jul 07, 2008 3:02 pm Post subject: Re: Large External CO2 Reactor Reply with quote

                                                   
ravi  wrote  (View  Post):                

 tank  ->  external  reactor  ->  Eheim  filter  ->  tank  ?
 
 Will  this  work  efficiently  ?                

 
 Hi  Ravi,
 
 That  should  be  
 
 Tank  ->  Eheim  filter  ->  external  reactor  ->tank
 
 For  efficiency  you  need  to  drive  it  by  something  more  than  1000lph  power  head  or  pump  &  increase  proportionally  based  on  the  aquarium  size  &  CO2  bubble  count.  
 
 With  2217  the  raw  pump  output  is  1000lph  &  with  'new'  media  you'll  have  ~800lph.  Over  time  this  will  drop  to  ~600lph  &  the  CO2  dissolving  rate  will  drop,  that's  the  reason  Madan  has  opted  for  a  dedicated  pump.
 
 
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