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http://indianaquariumhobbyist.com/community/ :: View topic - Activated Carbon
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Activated Carbon
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Mohanasundaram
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PostPosted: Fri Jul 22, 2005 2:10 pm Post subject: Activated Carbon Reply with quote

 Hi  All,
           One  of  my  frineds  told  me  that  he  has  heard  that  active  carbons  in  the  filter  are  bad  but  he  did  not  know  the  reason.  I  have  a  dolphin  F1200  internal  filter  with  active  carbon.  so  currently  i  removed  them  from  filter.  Can  anybody  tell  me  why  it  is  harmful  and  in  what  way?
 
 Regards,
 Mohan.
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aggiee747
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PostPosted: Fri Jul 22, 2005 2:39 pm Post subject: activated carbon Reply with quote

 Sir,
     Activated  carbon  is  used  all  over  the  world  in  any  ecternal  filters  to  take  away  the  chemicals  dissolved  in  the  water,any  odour  in  the  water,  b'cause  of  its  high  adsorbing  capacity.  A  best  activated  cabon  has  to  be  made  of  stronger  raw  materials  with  highly  porus.Eg..walnit  shell  instead  of  coconut  shell.  If  you  are  using  in  a  planted  aquarium,  yes  it  is  not  useful  b'cause  it's  going  to  take  away  all  the  nutients  you  pour  for  the  plants.  Main  thing  eveyone  forgets  is  the  carbon  can  absorb  any  medications  you  add  to  the  water  within  the  next  couple  of  hours  because  of  it's  high  adsorbing  nature,so  do  not  forget  to  take  out  the  carbon  from  your  filter  next  time  you  add  medications  to  the  tank.  using  this  will  avoid  yellowish  water  in  marine  after  couple  of  month.
 
 Agnello.
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Madan
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PostPosted: Fri Jul 22, 2005 2:42 pm Post subject:  Reply with quote

 Activated  carbon  is  not  bad  per  se.  The  effectiveness  of  the  Activated  carbon  diminishes  very  fast.  The  faster  it  clogs  the  faster  is  the  degradation.
 
 Activated  carbon  also  leaches  phosphates  into  the  water  over  time  leading  to  algae.
 
 With  discus  it  destroys  the  slime  coat  when  initially  introduced.
 
 It's  most  effective  to  rid  the  tank  of  ammonia  during  the  new  tank  syndrome  and  cycling  process  after  which  it  is  not  needed  in  my  opinion.
 
 I  never  use  activated  carbon  in  any  of  my  tanks.
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sundar
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PostPosted: Fri Jul 22, 2005 2:56 pm Post subject: Re: Active Carbin Reply with quote

                                                   
Mohanasundaram  wrote:                
Hi  All,
           One  of  my  frineds  told  me  that  he  has  heard  that  active  carbons  in  the  filter  are  bad  but  he  did  not  know  the  reason.  I  have  a  dolphin  F1200  internal  filter  with  active  carbon.  so  currently  i  removed  them  from  filter.  Can  anybody  tell  me  why  it  is  harmful  and  in  what  way?
 
 Regards,
 Mohan.                

 
 Hi  Mohan
 
 Activated  Carbon  is  used  in  filters  to  remove  any  Chemicals  in  the  Water  Column.  These  are  very  effective
 when  You  understand  the  Term  "  remove  Chemicals"  Like
 when  a  New  Tank  is  cycled  before  Introducing  Fish  in  it.
 
 In  the  Hospital  Tanks  where  you  treat  your  Fish  with  Medicine.
 
 Activated  Carbon  is  Expensive  and  it  requires  to  Change  once  in  3  Months  or  atleast  once  in  6  Months.
 
 In  the  Long  run  Activated  Carbon  as  Filter  Media  will  do  more  Harm  than  Good.  It  may  kill  the  Benificial  Nitrifying  Bacteria,  thus  resulting  in  build  up  of  Nitrates,that  Leads
 to  Ammonia,  which  requires  to  be  Zero  in  Fish  Tanks.  Smile  
 
 Regards
 Sundar
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Mohanasundaram
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PostPosted: Fri Jul 22, 2005 7:01 pm Post subject:  Reply with quote

 Hi  All,
           Thanks  a  lot.
 
 Regards,
 Mohan.
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Lancelot
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PostPosted: Fri Jul 22, 2005 7:29 pm Post subject:  Reply with quote

 Nag  &  Madan,
 
 I  remember  reading  somewhere  that  activated  carbon,  after  some  time  actually  releases  harmful  chemicals  into  the  water  if  not  removed  /  changed.  i  believe  it  is  supposed  to  release  the  chemicals  that  it  had  initially  absorbed.  am  i  correct?
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madhu_ulysses
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PostPosted: Fri Jul 22, 2005 9:03 pm Post subject:  Reply with quote

                                                   
Lancelot  wrote:                
Nag  &  Madan,
 
 I  remember  reading  somewhere  that  activated  carbon,  after  some  time  actually  releases  harmful  chemicals  into  the  water  if  not  removed  /  changed.  i  believe  it  is  supposed  to  release  the  chemicals  that  it  had  initially  absorbed.  am  i  correct?                

 
 AC  doesn't  absorb,  it  adsorbs.
 Also  to  the  best  of  my  knowledge,  AC  releases  what  all  it  adsorbed  in  weeks  and  not  months.
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sriharrsha
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PostPosted: Fri Jul 22, 2005 9:59 pm Post subject: AC! Reply with quote

 hi,
           eh?....i  also  read  in  many  sites  that  it  is  unlikely  for  activated  carbon  to  release  what  it  had  adsorbed!....im  confused....how  long  should  i  use  AC  in  my  2217  for  an  85  gallon  tank??....thank  you.
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madhu_ulysses
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PostPosted: Fri Jul 22, 2005 11:06 pm Post subject:  Reply with quote

 IMO,  1  week  is  the  duration  i  will  use,  if  at  all  i  decide  to  use  AC.
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nag
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PostPosted: Sat Jul 23, 2005 12:37 pm Post subject:  Reply with quote

 Madhu  is  right...
 
 Use  AC  just  for  a  week  and  remove...
 
 Navil,
 AC  doesn't  leach  what  it  has  adsorbed...But,  after  its  initial  use  for  a  week,  it  simply  acts  as  a  filter  media  and  nothing  else...
 Bye,
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Lancelot
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PostPosted: Sat Jul 23, 2005 9:10 pm Post subject:  Reply with quote

 nag,
 
 how  do  you  recharge  it?  or  is  it  replace?
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aggiee747
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PostPosted: Sun Jul 24, 2005 11:32 am Post subject:  Reply with quote

 One  can  recharge  thew  Ac  upto  3  times  depending  upon  the  quality  of  it.  It  can  be  taken  out  after  3  months  and  washed  properly  and  sundry  for  the  next  two  days,then  you  can  use  it,  but  the  adsorbtion  capacity  would  have  diminished.  By  sundrying  and  washing  you  are  again  reveling  the  porus  in  the  AC.  To  replace  you  can  change  once  in  three  months.
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Lancelot
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PostPosted: Sun Jul 24, 2005 7:10 pm Post subject:  Reply with quote

 aggiee,
 
 thanx
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nag
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PostPosted: Mon Jul 25, 2005 11:14 am Post subject:  Reply with quote

 Hi  Navil:
 
 To  re-use  AC,  you  need  to  boil  it  in  water  for  about  20mins,  first.
 Then  Sun-dry.  After  this  heat  them  in  the  Micro-Oven  at  >60dC  for  Four  mins.  Let  it  cool  and  use  it...
 Bye,
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sriharrsha
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PostPosted: Mon Jul 25, 2005 11:13 pm Post subject: AC! Reply with quote

 hi,  
       regarding  activated  carbon,  i  have  one  more  question!....the  EUREKA  FORBES  AQUA  GUARD  which  we  use  for  filterin  our  drinkin  water  also  has  activated  carbon  in  it  which  is  replaced  only  once  in  6  months  by  the  company  executive....then,  why  cant  we  use  AC  in  our  canisters  for  such  a  long  period?...even  the  water  which  "AQUAGUARD"  filters  also  contain  heavy  metals,high  chlorine  content  and  many  more  dissolved  salts  which  make  the  AC  saturated  continously.....got  my  point?...waitin  eagerly!!...thank  you
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