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http://indianaquariumhobbyist.com/community/ :: View topic - Ph Controller & CO2 Regulator Question
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Ph Controller & CO2 Regulator Question
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Ryel
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PostPosted: Tue Jan 11, 2011 1:50 pm Post subject: Ph Controller & CO2 Regulator Question Reply with quote

 Dear  Forum  Members,
                               I  have  dual  gauge  a  non  adjustable  working  pressure  co2  regualtor  which  has  solenoid,bubbule  counter  and  needle  valve   which  is  connected  to  my  ph  controller.  The  thing  that  i  have  observed  is  that  if  i  set  the  needle  valve  to  say  8  bubbles  per  second  when  the   ph  controller  switches  on  the  solenoid  regulator  i  am  able  to  get  8  bubbles  per  second  for  about   tow  to  three  hours  after  that  it  gets  reduced  to  two  or  three  and  i  have  to  manually  increase  the  neddle  valve  to  get  it  back  to  8  bubbles  per  second.  Is  this  correct  behaviour.  How  can  i  resolve  this  or  do  i  need  a  adjustable  working  pressure  solenoid  regulator.
   
   
 Awating  your  reply.
   
   
 Regards,
   
 Ryel
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Madan
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PostPosted: Tue Jan 11, 2011 4:31 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 The  CO2  regulator  is  allowing  a  "burst"  of  gas  when  the  solenoid  switches  on,  as  the  tubing  after  the  solenoid  is  under  negative  pressure.
 This  increased  pressure  before  the  needle  valve  is  allowing  8  bubbles  per  second  initially,  but  has  to  be  adjusted  subsequently  once  the  pressure  is  normal.
 You  need  a  better  quality  CO2  regulator,  preferably  get  one  where  the  output  pressure  can  be  adjusted.
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Ryel
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PostPosted: Tue Jan 11, 2011 5:01 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 Will  something  like  this  do.
 
 http://cgi.ebay.com/Co2-Working-Pressure-Adjustable-Solenoid-Regulator-A164-/180608307266?pt=LH_DefaultDomain_0&hash=item2a0d181042
 
 
 Regards,
 
 Ryel
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Madan
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PostPosted: Tue Jan 11, 2011 5:08 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 That  will  do,  but  the  solenoid  valve  is  110V.
 
 If  you  could  update  your  profile  with  your  location  it  would  help  to  point  you  up  the  right  street.
 
 You  already  have  the  pH  controller  +  Solenoid,  you  need  only  to  connect  these  to  the  new  regulator.
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Ryel
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PostPosted: Tue Jan 11, 2011 5:23 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 I  have  asked  them  about  solenoid  "110v"  waiting  for  their  reply.
 
 Yes  u  r  right  i  have  a  ph  controller  +  Solenoid  and  need  a  new  regulator  with  a  adjustable  working  pressure  but  don't  know  where  to  get  them  in  Mumbai.  If  u  can  provide  me  some  contacts  in  Mumbai  where  i  can  get  the  same  and  connect  the  solenoid  and  needle  valve  to  the  new  regulator  it  would  be  really  helpful.
 
 Thanks  for  your  help.  
 
 
 Regards,
 
 Ryel
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Madan
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PostPosted: Tue Jan 11, 2011 5:41 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 Thanks  for  your  location.
 
 Now  the  Mumbai  guys  will  step  in  when  they  see  this  thread.
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Ryel
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PostPosted: Tue Jan 11, 2011 5:43 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 So  u  can't  help  me  out  with  this  is  it.  Then  who  will  ???
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davinci
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PostPosted: Tue Jan 11, 2011 6:24 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 Ryel,
 
 I  have  never  come  across  a  ph  controller  which  you  could  connect  before  a  solenoid  valve  and  after  the  regulator.
 
 Could  you  post  a  picture  of  the  ph  controller  and  your  regulator  and  the  way  you  have  connected.  Once  the  picture  is  given  our  gurus  and  everyone  would  be  able  to  give  inputs.
 
 Does  the  ph  controller  have  a  brand  and  could  you  pls  pm  me  the  price.  I  would  also  like  to  fit   one  on  my  regulator.
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Madan
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PostPosted: Tue Jan 11, 2011 6:51 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 Ryel,
 
 I  don't  know  the  exact  location  of  the  shops  in  Mumbai,  there  are  number  of  members  here  from  Mumbai  who  will  guide  you  to  source  what  you  want.
 Other  members  from  outside  Mumbai,  could  also  ship  the  regulator  to  you,  wait  for  them  to  post  on  this  thread.   Smile
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Tirtha C
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PostPosted: Tue Jan 11, 2011 6:55 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 Check  the  below  link.
 
 http://indianaquariumhobbyist.com/community/modules.php?name=Forums&file=viewtopic&t=19164
 
 I  am  using  the  second  one.  Good  quality  and  working  fine  for  last  couple  of  months.
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davinci
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PostPosted: Tue Jan 11, 2011 7:00 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 Madan  Sir,
 
 Is  there   a  ph  controller  which  you  can  connect  to  a  co2  line  or  is  it  a  stand  alone  unit.
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Tirtha C
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PostPosted: Tue Jan 11, 2011 7:34 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

                                                   
davinci  wrote  (View  Post):                
Madan  Sir,
 
 Is  there   a  ph  controller  which  you  can  connect  to  a  co2  line  or  is  it  a  stand  alone  unit.                

 
 Why  you  need  a  pH  controller  at  the  first  place  for  a  planted  tank?
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Ryel
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PostPosted: Tue Jan 11, 2011 7:42 pm Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 I  have  sent  a  link  with  this  message  thread  kindly  have  a  look  at  the  ph  controller  and  the  co2  regulator  that  i  have.
 
 Kindly  note  the  ph  controller  and  the  co2  regulator/solenoid  are  two  different  appliances.  The  ph  controller  has  a  additional  relay  (power  outlet)  where  you  can  connect  any  appliance  in  my  case  i  have  connected  a  co2  regulator/solenoid  to  control  my  ph  and  keep  it  in  within  6.97  &  7.04.  The  ph  controller  also  comes  with  a  ph  electrode.
 
 http://picasaweb.google.com/ryeldsz/CO2#  
 
 
 Kindly  help  me  out  with  the  problem  i  am  facing  as  mentioned  in  the  above  message  string.  Any  contact  in  mumbai  where  i  can  get  a  new  adjustable  working  pressure  co2  regulator  which  i  can  connect  to  the  solenoid  and  needle  valve.
 
 
 @  davinci:-  The  ph  controller  that  i  have  is  a  imported  one  with  one  dosing  pump  (power  outlet).  I  can  get  it  for  you  if  you  want  one.  Kindly  email  me  @  "ryl_dsz@yahoo.co.in".
 
 Regards,
 
 Ryel
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Ryel
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PostPosted: Wed Jan 12, 2011 11:18 am Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

                                                   
Madan  wrote  (View  Post):                
The  CO2  regulator  is  allowing  a  "burst"  of  gas  when  the  solenoid  switches  on,  as  the  tubing  after  the  solenoid  is  under  negative  pressure.
 This  increased  pressure  before  the  needle  valve  is  allowing  8  bubbles  per  second  initially,  but  has  to  be  adjusted  subsequently  once  the  pressure  is  normal.
 You  need  a  better  quality  CO2  regulator,  preferably  get  one  where  the  output  pressure  can  be  adjusted.                

 
 
 Madan  you  r  sure  i  need  to  only  change  the  regulator  and  get  a  adjustable  working  pressure  regulator  right.  I  don't  need  to  change  the  needle  valve  correct  cause  some  one  told  me  that  it  could  be  the  cause  too.  The  bubbles  per  second  dropped  too  in  the  morning  had  to  manually  increase  the  neddle  valve   to  get  it  back  up  again.  The  last  time  i  incresed  the  needle  valve  to  get  the  bubbles  back  up  was  about  12  hrs  back.
 
 Regards,
 Ryel
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PostPosted: Wed Jan 12, 2011 11:29 am Post subject: Re: Ph Controller & CO2 Regulator Question Reply with quote

 The  spindle  of  the  needle  valve  moves  up  when  you  turn  it  anticlockwise  to  open  the  valve.
 This  is  achieved  by  the  pitch  of  the  threaded  portion  on  the  spindle,  finer  the  pitch  better  the  control.  
 The  flow  through  the  needle  valve  for  a  given  opening  is  dependent  on  the  pressure  before  the  needle  valve.
 As  long  as  that  pressure  is  constant,  the  needle  valve  will  allow  the  same  flow  of  gas  through  it.
 
 The  spindle  of  the  needle  valve  in  your  case  is  not  moving  "Down"  all  by  itself  to  shut  off  the  gas  flow.
 
 If  you  are  still  unsure,  take  out  the  needle  valve  and  check  that  nothing  is  blocking  the  passage  (  teflon  tape  and  the  like).
 I  am  sure  you  will  not  find  anything  in  there  causing  you  trouble.  Check  your  system  for  leaks.
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