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http://indianaquariumhobbyist.com/community/ :: View topic - Glutaraldehyde - Strike Back
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Glutaraldehyde - Strike Back

 
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Tirtha C
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PostPosted: Wed Jun 20, 2007 4:45 pm Post subject: Glutaraldehyde - Strike Back Reply with quote

 Hi,
  for  a  long  time  I  was  looking  for  a  additional  Carbon  source  along  with  my  DIY  CO2(Main  reason,  as  of  now  my  pocket  is  not  permitting  me  to  get  pressurized  CO2  setup).  Then  I  found  Glutaraldehyde  can  be  used  as  another  Carbon  Source  to  plants.
 
  Last  night  I  have  gone  through  the  Old  Topic  regarding  the  same.  
 http://indianaquariumhobbyist.com/community/modules.php?name=Forums&file=viewtopic&t=2917&start=120&postdays=0&postorder=asc&highlight=
 
 
 Instead  of  making  that  Old  thread  alive,  I  am  starting  a  new  thread.  In  the  Old  thread,  there  is  no  final  updates  from  the  people  who  joined  Glutaraldehyde  Bandwagon  at  very  early  stage.  
 
 
 I  am  starting  with  a  new  4x2x2  Planted  tank  and  planning  to  add  Glutaraldehyde  in  a  regular  basis  as  secondary  source  of  Carbon  as  well  as  for  algaecide.  But  before  jumping  into  that,  need  to  clear  some  confusion  still  am  having.
 
 1.  Will  it  be  sufficient  as  a  Carbon  source  along  with  a  DIY  CO2  reactor  (2  Bubble/Sec)  in  a  4x2x2  Planted  tank?
 
 2.  What  will  be  the  dosage,  if  I  prepare  solution  using  30ml  25%  Glut  with  500ml  Water,  in  my  tank?
 
 3.  If  we  use  correct  amount  of  Glut  in  Aquarium,  is  there  any  potential  threat  for  any  Plants  and  Fishes?  (I  read  high  usage  of  Glut  can  be  harmful  to  Vals,  Riccia,  Java  Moss  etc  etc).
 

 If  you  have  any  advice  or  any  updates,  please  share.
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Madan
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PostPosted: Wed Jun 20, 2007 5:39 pm Post subject: Re: Glutaraldehyde - Strike Back Reply with quote

 If  you  are  thinking  of  a  high  light  planted  tank,  and  EI  dosing  with  DIY  CO2  +  glutraldehyde  upping  the  carbon  content,  well  try  and  let  us  all  know  the  results.
 
 Arup  had  calculated  and  posted  the  dosage  in  the  above  thread,  that's  good  enough  in  my  opinion.
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Tirtha C
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PostPosted: Wed Jun 20, 2007 5:56 pm Post subject: Re: Glutaraldehyde - Strike Back Reply with quote

 Thanks  a  lot  Madan  for  the  reply.  
 For  My  120G  tank,  Lights  will  be  6  T5  HO  (54  watt  each,  that  means  2.7watt/G)  and  will  use  either  PMDD  or  EI
 
 According  to  Arup,  Calculation  is  10  ML  diluted  solution  in  12  G  tank.  So  for  120  G  tank  It  will  be  100ML.  
 
 Can  you  please  help  me  to  find  out,  if  I  want  to  add  25%  GD  directly  to  the  tank  what  should  be  the  quantity?
 
 Am  really  bad  in  Maths....  I  tried  but  I  failed  to  calculate....     Crying or Very sad  
 
 According  to  my  calculation,  
 
 10ML  diluted  GD  holds  0.6ml  GD.  So  I  need  (0.6*10)ML=6ML  25%  Raw  GD  I  need  to  add  to  my  Tank.
 

 Please  correct  me  if  my  calculation  is  wrong.  
 
 And  another  question,  Is  it  required  to  add  GD  regular  or  I  can  skip  dosing  GD  for  1  day  after  each  2  days.
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Madan
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PostPosted: Wed Jun 20, 2007 6:18 pm Post subject: Re: Glutaraldehyde - Strike Back Reply with quote

 That  thread  gives  the  dosage  of  Seachem's  Excel,  the  Glutraldehyde  dosage  was  tailored  as  per  that,  with  testing  of  the  original  Seachem  Excel  sample  I  sent  him  and  calculations  by  Arup.
 
 I  don't  have  a  bottle  of  Excel  with  me  now  to  advice  you  if  alternate  days  dosing  will  do,  check  with  Arup.  It  is  better  to  provide  steady  state  conditions  always,  and  not  oscillate  between  high  and  low.
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Rana
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PostPosted: Wed Jun 20, 2007 7:21 pm Post subject: Re: Glutaraldehyde - Strike Back Reply with quote

 If  you  add  30  ml  of  25%  Conc.  Glut  in  500  Ml,  the  diluted  solution  will  contain  1.5%  Conc.  Glut.
 
 You  can  calculate  with  this  simple  formula:
 
 V1S1  =  V2S2
 
 30  *  25  =  500  *  S2
 
 Or  S2  =  1.5
 
 Your  tank  size  is  4  x  2  x  2  =  16  Cubic  Feet  =  Approx  119  Gallon  or  450  Liters  (Nominal)
 Effective  water  volume  will  be  approx.  75%  =  90  Gallon  or  340  Liters.
 
 We  try  to  maintain  1.0  to  2.0  ppm  (Mg/Liter)  active  Gluteraldehyde  in  tank  water.
 
 So  you  need  340  *  2  mg  =  680  Mg  per  dose.
 
 1%  solution  means  10000  mg/Liter.
 
 So  once  again
 
 V1  *  (1.5  *  10000)  =  340  *  2
 
 Or  V1  =  0.045  liters  =  45  ml.
 
 Now  if  you  want  to  directly  add  25%  conc.  Glut  in  your  tank,  the  calculation  could  be  like  this
 
 V1  *  (25*10000)  =  340  *  2
 
 Or  V1  =  0.0027  Liter  =  2.70  ml  or  55  drops  (1ml  =  20  drops  approx.)
 
   In  highlighted  tank  dosage  of  Glut  can  perform  around  60%  job  of  CO2  dosing.  Java  Moss,  Riccia  etc.  will  not  withstand  in  long  term.  Better  avoid  these  plants.
 
 Regards
 Rana
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Tirtha C
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PostPosted: Wed Jun 20, 2007 10:23 pm Post subject: Re: Glutaraldehyde - Strike Back Reply with quote

 Rana,  thanks  a  lot  to  solve  this  complex  math  for  me.   Thumb Up   Still  now  am  trying  to  understand  the  steps.  
 
 Great  Help.  Let  me  start  with  my  tank.  I  will  keep  you  all  updated  with  the  progress.   Smile
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sandeepraghuvanshi
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PostPosted: Thu Jun 21, 2007 9:40 am Post subject: Re: Glutaraldehyde - Strike Back Reply with quote

 A  steady  supply  of  glutaraldheyde  will  be  more  benefecial  than  off  &  on.
 Vals,  moss  do  not  do  good  with  glutar,  they  either  die  if  dose  is  high  or  just  stagnate  on  low  doses.
 Fishes  do  not  seem  have  any  problems  with  low  doses  of  glutar,  however  invertibrates  like  snails  get  killed  by  it.
 In  my  opinion  glutar  is  more  effective  in  smaller  tanks  where  providing  diy  co2  is  difficult  to  prepare.
 As  an  alternate  you  can  provide  more  bottles  of  Co2.
 Glutar  is  more  effective  as  an  algaecide,  also  it  has  handling  issues,  please  take  adequate  precautions  while  handking  it.  if  possible  do  not  does  25%  glu  directly,  dilute  it  first,  this  makes  it  safer  to  handle.
 My  experience  with  glu  has  been  so  so,  handling  this  thing  is  a  big  problem  in  itself,  specially  if  you  have  nosey  kids  around.  Very Happy  
 BTW  keep  us  posted.
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