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http://indianaquariumhobbyist.com/community/ :: View topic - Glutaraldehyde as a Co2 source?
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Glutaraldehyde as a Co2 source?
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suuresh1
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PostPosted: Wed Jul 05, 2006 5:52 pm Post subject:  Reply with quote

 Greetings,
 
 I  too  have  been  using  glutaraldehyde  for  the  last  month  with  average  results  in  my  55  gallon  tank.  The  various  algae  are  fighting  a  loosing  battle  but  the  plants  are  all  doing  reasonably  well.
 
 The  best  results  are  in  my  smaller  tanks  2  x  1s.  Both  are  doing  very  well  compared  to  the  larger  tank.  But  no  pearling  happens  any  where.  There  is  little  to  no  algae  in  the  smaller  tanks  and  plant  growth  is  brisk.
 
 I  dose  the  concentrated  sol  directly  into  the  tank  to  prevent  too  much  handling  of  the  solutions.  5  drops  in  the  small  tanks  &  15  in  the  larger  tank
 every  night  after  lights  out  along  with  PMDD.  There  seems  to  be  no  effect  on  the  fish,  except  that  they  are  always  hungry  Chuckle  
 
 My  Co2  should  be  comming  soon  but  I'm  thinking  of  continuing  with  the  glutaraldehyde  to  keep  the  algae  at  bay.
 
 cheers
 
 Suuresh
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Atanu
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PostPosted: Wed Jul 05, 2006 6:35 pm Post subject:  Reply with quote

 You  won't  be  seeing  pearling  if  you  are  only  using  glutaraldehyde.  Pearling  comes  as  a  side  effect  of  photosynthesis  when  CO2  breaks  down  to  C  and  O2.  Glutaraldehyde  allows  the  Carbon  chain  to  be  directly  absorbed  by  the  plants.  ..  There  is  no  Oxygen  as  a  fallout  of  this  process..  so  no  pearling.
 
 Use  pressurized  CO2  as  it  will  be  more  economical  on  long  run  for    a  big  planted  tanks.  I  am  only  interested  in  glutarldehyde  for  its  algaecide  properties..  and  will  continue  to  dose  it  for  keeping  algae  at  bay..  but  the  CO2    reactor  will  remain  in  place..  for  overall  plant  nutrition.
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Atanu
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PostPosted: Wed Jul 05, 2006 6:42 pm Post subject:  Reply with quote

                                                   
vinven  wrote:                
It  seems  like  many  hobbyists  are  experimenting  with  glutaraldehyde  lately.I  went  to  Laboratory  traders  amidst  the  mad  traffic  all  the  way  from  the  other  end  of  the  city  to  find  that  they  had  no  stock.The  lady  at  the  counter  tells  me  that  they  got  sufficient  quantities  of  glutaraldehyde  last  week  and  they  got  sold  off  in  no  time    Chuckle    Anybody  planning  to  go  to  laboratory  traders  to  pick  up  some  of  these  will  have  to  wait  for  a  week.I  am  going  to  Vasa  scientific  in  a  while.Hopefully  i  find  it  there.                

 
   Very Happy    What's  a  phone  for..  You  should  have  given  a  call  to  these  guys  before  you  spent  money  on  petrol.
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Atanu
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PostPosted: Wed Jul 05, 2006 6:44 pm Post subject:  Reply with quote

                                                   
Madan  wrote:                
The  price  of  Glutraldehyde  25%  solution  is  almost  double  what  it  is  elsewhere.                

 
 Madan,  Where  is  this  elsewhere  ??  Let  us  know  so  we  can  benifit  too.
 
 Regards
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Madan
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PostPosted: Wed Jul 05, 2006 7:18 pm Post subject:  Reply with quote

 Elsewhere  is  anywhere  but  Laboratory  Traders.
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arupch
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PostPosted: Wed Jul 05, 2006 8:30 pm Post subject:  Reply with quote

 Atanu,  I'd  advice  you  not  to  increase  the  2X  all  at  once.  I've  done  this  and  seen  that  my  fishes  are  gasping  at  the  surface.  so  act  carefully.  increase  the  dose  carefully  to  achieve  the  most  effective  level  for  your  tank.  For  me  it's  12.5  ml  of  the  1.5%  solution  per  15  G  water  everyday  alongwith  PMDD  without  any  CO2  injection.  As  I've  said  earlier  that  the  concentration  of  Excel  that  I've  determined  in  Lab.  is  only  an  approximate  value.  exact  determination  can  not  be  done  because  the  quantity  of  sample  that  Madan  was  kind  enough  to  send  me  all  over  from  Bangalore  was  a  bit  less.  Also  my  friend  had  to  try  many  method  to  come  to  a  suitable  method  of  analysis.  So  Seachem  recommended  dosages  may  not  work.  Also  Excel  may  contain  other  ingredients  other  than  Glutaraldehyde.
 
 it  has  very  good  action  against  algae  and  this  is  quite  evident  as  Glutaraldehyde  is  a  biocide.
 
 As  for  plants,  the  results  are  very  much  encouraging.  I  was  earlier  using  DIY  CO2  in  the  same  tank,  although  it  was  OK  but  I  never  got  results  comparable  to  Glutaraldehyde.  Also  its  very  easy  and  hassle  free  compared  to  DIY  CO2.
 
 Amitava  told  me  that  he  got  pearling  with  Glutaraldehyde  in  his  tank.  I  think  its  time  for  Amitava  to  update  his  findings.  Although  I  never  got  any  pearling.  
 
 Guys,  please  update  your  results  with  Glutaraldehyde  regularly.
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amitava
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PostPosted: Thu Jul 06, 2006 9:39 am Post subject:  Reply with quote

 Hi  Guys,
 
 I  AM  having  pearling  in  my  2'/1'/1'  tank  after  water  changes.  and  Those  plants  who  are  already  reaching  the  surface  give  many  bubbles.  I  think  that  is  oxygen  only.
 
 If  anybody  wants  to  try  this  Glutaraldehyde  method  he/she  should  give  it  a  try  with  small  tank  as  a  algaeside  and  co2  source  IMO.  It  is  very  much  usefull  in  a  big  tank  as  a  algaeside  also.
 
 I  am  using  dry  powder  of  all  the  ferts  directly  into  the  tank  as  I  am  following  EI  method  of  dosing.  
 
 I  must  thank  Arup  for  this  fantastic  chemical  and  all  the  hard  work  he  is  doing  .
 
 regards
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ajaikumarr
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PostPosted: Thu Jul 06, 2006 9:40 am Post subject:  Reply with quote

 I'm  also  planning  to  use  Glutaraldehyde  for  the  tank  size  of  36"  *  12"  *  18".  
 
 Can  somebody  clarify  the  following  things
 Can  I  use  PMDD  along  with  this?  
 When  should  I  start  the  glutaraldehyde  dosing  after  setting  up  the  tank?
 How  about  the  lighting?
 Is  it  necessary  to  keep  existing  CO2  setup  at  the  begining  stages?
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vkv
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PostPosted: Thu Jul 06, 2006 10:25 am Post subject:  Reply with quote

 Hi,
 
 Lot  of  people  going  the  Glutaraldehyde  way...  Smile
 
 I  guess  its  important  that  everybody  keeps  the  safety  aspect  in  mind  especially  those  with  children  at  home.  that  includes  me  Smile
 
 THIS  IS  A  DANGEROUS  CHEMICAL.
 
 From  what  I  read  on  the  net,  it  is  toxic  with  long  term  effects  of  sensitisation  in  case  of  continuous  exposure  at  greater  than  0.1  ppm.
 The  concentration  that  we  are  using  for  dosing  is  way  above  this.  Maybe  everybody  starting  to  use  this  should  go  back  and  read  the  warnings  posted  by  Gopi  before  trying  this.
 
 It  is  mentioned  that  if  you  can  smell  the  chemical(rotten  apple  smell)  then  the  concentration  is  above  the  safe  limits.  I  have  noted  that  I  do  get  a  whiff  of  the  rotten  apples  even  with  the  1.5%  concentration  that  we  are  using...
 
 Regards,
 Venkat
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Madan
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PostPosted: Thu Jul 06, 2006 11:31 am Post subject:  Reply with quote

 I  get  the  smell  even  from  the  Bottle  of  Excel  that  Seachem  sells.
 
 Irritating  for  a  moment.  Take  care.
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PostPosted: Thu Jul 06, 2006 1:42 pm Post subject:  Reply with quote

 I  started  dosing  glutaraldehyde  from  last  night.I  prepared  the  solution  by  mixing  30  ml  in  500  ml  of  water.My  tank  is  4'  by  21"  by  21"  and  i  think  it  holds  about  65-70  gals  of  water  when  the  gravel  and  the  top  1"  is  excluded.I  dosed  35  ml  of  this  solution  and  the  PMDD  just  before  switching  off  the  lights.
 One  of  my  cherry  barbs  were  swimming  upside  down  today  morning  and  is  gonna  die  anytime.Rest  of  the  fish  seem  to  be  fine  and  active.The  tank  is  2  months  old  now  and  may  be  it  is  still  in  its  cycling  stages.Am  not  sure  though.
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vkv
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PostPosted: Thu Jul 06, 2006 2:14 pm Post subject:  Reply with quote

 Hi  Vinay,
 
 Not  that  it  has  any  relevance  to  the  condition  of  your  cherry  barb,  but  Glutaraldehyde  should  not  be  dosed  in  the  evening  before  lights  out  like  PMDD.  It  is  used  during  photosynthesis  and  should  be  dosed  in  the  morning  before  lights  on.
 
 Regards,
 Venkat
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PostPosted: Thu Jul 06, 2006 7:58 pm Post subject:  Reply with quote

 @Madan
 The  smell  of  the  Excel  sample  you  sent  was  the  first  confirmation  that  Excel  contains  Glutaraldehyde.
 
 @Ajai
 IMHO  Gluataraldehyde  or  PMDD  should  not  be  dosed  in  a  newly  setup  tank.  Let  it  cycle  first.  wait  atleast  for  3  months.  You  can  use  CO2  alongwith  Glutaraldehyde.  Its  upto  you.  You'll  definitely  get  better  result  with  both  of  them.  You  must  dose  PMDD  alongwith  Glutaraldehyde.  Light  should  be  high  because  this  is  a  hi-tech  setup.  Anything  less  than  2.5W/G  is  a  strict  no-no.  The  routine  that  I  follow  is,    dose  Glutaraldehyde  and  NO3+SO4+PO4  mixture  in  the  morning  and  Microsol  B  at  night.
 
 @  vinay
 Always  start  with  lower  concentration  with  any  chemicals  in  your  tank.  Increase  it  gradually.  I  started  with  concentration  lower  than  what  Seachem  recommended.  Increased  it  slowly  over  a  period  of  10-15  days  to  find  the  optimum  conc.  Also,  when  trying  things  like  Glutaraldehyde  never  use  any  concentration  recommended  by  anybody.  Because  no  two  tanks  are  similar.  Read  everybody's  recommendations  but  use  your  brain  when  it  comes  to  dosing  in  your  tank.  As  a  general  rule  I  always  start  on  a  lower  side.
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PostPosted: Sat Aug 05, 2006 2:15 pm Post subject: Re: Glutaraldehyde as a Co2 source? Reply with quote

 Any  updates?
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PostPosted: Sat Aug 05, 2006 2:17 pm Post subject: Re: Glutaraldehyde as a Co2 source? Reply with quote

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