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http://indianaquariumhobbyist.com/community/ :: View topic - Back water flow in D.I.Y. Co2 generator
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Back water flow in D.I.Y. Co2 generator

 
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Joy
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Joined: Apr 29, 2006
Posts: 227
Location: Lucknow

Status: Offline
PostPosted: Wed Jul 26, 2006 11:47 am Post subject: Back water flow in D.I.Y. Co2 generator Reply with quote

 Hi,
 My  D.I.Y.Co2  generator  installed  before  two  days  ended  up  in  a  disaster,  yesterday,  after  about  50  hours  of  waiting  for  the  Co2  generation  to  start  with  and  Â setting  the  equipment,  I  saw  that  the  empty  space  in  the  plstic  bottle  which  was  filled  Â about  3/4th  with  water  mixed  with  yeast  and  sugar  was  filled  up  completely  with  water  that  was  back  siphoned  from  the  tank,  what  I  presume  is  that  the  chemical  reaction  going  on  inside  the  plastic  bottle  has  created  a  vaccum  which  sucked  up  the  water  from  the  aquarium,  quite  possible  becasue  I  was  unable  to  find  a  one  way  valve  which  is  normally  recommended  for  use  in  the  D.I.Y.  Co2  generator,  help  in  the  form  of  suggestion  are  welcome  for  resetting  the  equipment  once  again,  please  also  inform  if  anyone  can  indicatewhere  in  Lucknow  can  a  one  way  valve  be  purchased  from.......
 Regards  Shocked  Â Shocked  Â Surprised  Â Sad
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AQuARiUs_InDicA
IAH New Member
IAH New Member



Joined: Sep 13, 2006
Posts: 93
Location: Kottayam > Kerala

Status: Offline
PostPosted: Sun Nov 19, 2006 11:45 am Post subject: Re: Back water flow in D.I.Y. Co2 generator Reply with quote

 I  can  share  you  one  or  you  could  buy  one  from  Konikkara  Industries   Thumb Up
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kuksinhyd
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Joined: Jan 14, 2004
Posts: 288
Location: Hyderabad, India

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PostPosted: Sun Nov 19, 2006 12:34 pm Post subject: Re: Back water flow in D.I.Y. Co2 generator Reply with quote

 In  the  absense  of  a  NRV/Check  valve  you  could  try  looping  the  airline  higher  than  the  tank  level,  that  should  do  the  trick
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essabee
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Regular Poster on IAH



Joined: Nov 14, 2006
Posts: 541
Location: Ranchi, Jharkhand.

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PostPosted: Wed Nov 22, 2006 5:25 pm Post subject: Re: Back water flow in D.I.Y. Co2 generator Reply with quote

 Joy
 What  have  you  done  to  the  co2  supply  into  your  aquarium.  Does  it  enter  a  point  where  there  is  a  positive  pressure.  I  that  is  the  position  you  will  all  face  a  lot  of  difficulties  in  future.
 Lead  the  co2  to  a  point  of  negative  pressure,  like  the  suction  point  of  a  powerhead.  You  problems  will  solved  even  without  a  oneway  valve.
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venki25
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Joined: Dec 04, 2004
Posts: 409
Location: Chennai

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PostPosted: Wed Nov 22, 2006 5:50 pm Post subject: Re: Back water flow in D.I.Y. Co2 generator Reply with quote

 Do  not  use  any  check  valves  to  control  backflow.  Refer  old  posts.  I  was  scared  by  the  idea  that  in  short  time  some  kind  of  waste  accumulates  inside  the  checck  valve  and  could  lead  to  disaster.
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Joy
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Joined: Apr 29, 2006
Posts: 227
Location: Lucknow

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PostPosted: Wed Nov 22, 2006 5:57 pm Post subject: Re: Back water flow in D.I.Y. Co2 generator Reply with quote

 Hi  !
 With  so  many  contradictory  suggestions  I  am  heading  no  where,  can  any  one  help  me  as  to  how  should  I  proceed  with  the  D.I.Y.  Co2  gadget,  I  have  still  not  been  able  to  add  the  Co2  generator  in  my  tank  and  still  hope  to  set  it  correctly  one  day......  Sad   Wall Bang  
 Regards
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Rana
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Joined: Nov 06, 2006
Posts: 558
Location: Kolkata

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PostPosted: Wed Nov 22, 2006 6:27 pm Post subject: Re: Back water flow in D.I.Y. Co2 generator Reply with quote

 First,  you  connect  bottle  outlet  with  the  inlet  tube  which  goes  inside  the  aquarium  when  the  system  started  producing  CO2.  To  undersand  this,  please  put  the  outlet  tube  in  a  glass  of  water.  after  you  see  the  bubble,  you  may  connect.  This  will  ensure  a  positive  pressure  inside  the  bottle.
 
 Keep  the  bottle  outlet  Tube  just  below  the  bottle  cap  so  that  there  is  a  considerable  air  gap  between  the  yeast  solution  and  end  tip  of  the  outlet  tube.  For  a  two  liters  bottle,  make  a  solution  of  one  liter  only.
 
 Place  the  bottle  at  a  elevation  so  that  the  outlet  tip  is  in  higher  level  than  aquarium  water  level.
 
 Yeast  solution  will  foam  so  there  will  be  some  increase  in  solution  level  inside  the  bottle.
 
 If  you  can  manage,  place  NRV.
 
 If  you  need  more  elaboration,  please  let  us  know.
 Regards
 
 Rana
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psimhan
Committed Member of IAH
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Joined: Jan 06, 2006
Posts: 2053
Location: Bangalore

Status: Offline
PostPosted: Wed Nov 22, 2006 6:30 pm Post subject: Re: Back water flow in D.I.Y. Co2 generator Reply with quote

 Have  a  look  at  this  link.
 http://www.qsl.net/w2wdx/aquaria/diyco2.html
 It  gives  you  an  option  to  prevent  backflow  using  an  extra  bottle.
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