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http://indianaquariumhobbyist.com/community/ :: View topic - stability of pH
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stability of pH

 
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Rajendran
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PostPosted: Mon Dec 26, 2005 4:20 pm Post subject: stability of pH Reply with quote

 What  are  the  ways  to  bring  pH  to  the  acceptable  level?  How  to  raise  or  decrease  pH?
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ajaikumarr
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PostPosted: Mon Dec 26, 2005 6:22 pm Post subject: Re: stability of pH Reply with quote

                                                   
Rajendran  wrote:                
What  are  the  ways  to  bring  pH  to  the  acceptable  level?  How  to  raise  or  decrease  pH?                

 
 You  can  use  "Aqua  pharmachetucals"  products  like  Proper  pH,  pH  Up,  pH  Down...  Main  trick  is  to  keep  the  stock  proper...
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madhu_ulysses
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PostPosted: Tue Dec 27, 2005 8:10 am Post subject:  Reply with quote

 Most  fishes  do  very  well  in  a  wide  range  of  pH  until  the  levels  are  stable.    I  won't  bother  much  about  pH  unless  I  have  wild  discus  or  altums.
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nag
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PostPosted: Wed Dec 28, 2005 6:02 am Post subject:  Reply with quote

 Hi  Rajendran:
 
 In  the  first  place  why  would  you  want  to  do  that?...Confused...
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Rajendran
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PostPosted: Wed Dec 28, 2005 2:28 pm Post subject: Stable pH Reply with quote

 Because  our  water  in  our  area  is  not  good  and  standard.
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nag
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PostPosted: Wed Dec 28, 2005 4:49 pm Post subject:  Reply with quote

 Hi  raj:
 Good  OR  Bad,  Potable  water  shall  have  a  balance  in  pH...so  get  it  checked  on  a  random  sampling  before  getting  into  the  act...
 
 But,  if  the  water  is  to  be  used  for  a  marine  setup,  then  it's  a  different  issue...  Smile  
 Bye,
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Inder
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PostPosted: Thu Apr 20, 2006 3:57 pm Post subject: Re: stability of pH Reply with quote

                                                   
Rajendran  wrote:                
What  are  the  ways  to  bring  pH  to  the  acceptable  level?  How  to  raise  or  decrease  pH?                

 
 Hi,  pH  stability  is  very  tricky.  First  check  the  pH.  The  municipal  water  should  have  a  resonablly  good  pH  around  7.2  to  7.4.  If  you  are  using  borewell  water  it  may  be  much  higer.  Check  if  your  sand  is  inert  add  little  acid  see  if  it  fizzes.  If  it  fizzes  it  has  got  a  high  content  of  calcium.  What  ever  you  do  to  stablize  the  pH  it  will  bounc  back.  KH  is  temporary  hardness.  It  acts  like  a  buffer.  It  keeps  absorbing  the  acid.  So  change  the  sand  you  can  use  Quartz  sand  it  is  totally  inert.  Then  add  pH  down  acid  you  can  use  HCl  or  sulphuric  acid  you  will  have  to  prepare  1:100  solution  and  add  few  drops.  After  adding  the  acid  check  the  pH  see  that  you  dont  chang  the  pH  more  than  0.2  any  time.  Next  day  again  check  the  pH  repeat  this  until  you  get  the  desired  pH.  To  increase  the  pH  simply  add  some  calcium  you  can  try  CaCo3.  
 Reguards,
 Inder.
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Madan
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PostPosted: Thu Apr 20, 2006 4:29 pm Post subject: Re: Stable pH Reply with quote

                                                   
Rajendran  wrote:                
Because  our  water  in  our  area  is  not  good  and  standard.                

 
 pH  should  be  the  least  of  your  worries.  If  the  water  is  bad,  then  either  it  is  too  hard,  or  too  soft  -  but  nobody  calls  soft  water  bad.
 
 By  bad  quality  water  I  understand  your  water  is  very  hard  and  has  a  high  pH.  Please  correct  me  if  I  am  wrong  here.  It  may  be  worthwhile  investing  in  a  DI  unit  than  pay  heavily  for  pH  buffers.  Adding  Acids  to  hard  water  will  no  doubt  reduce  your  pH,  but  there  will  be  lots  more  ugly  deposits  around  your  glass.  Mixing  DI  water  with  tap  or  well  water  to  give  you  the  required  hardness  will  stabilise  your  pH  too.
 
 What  kind  of  fish  do  you  want  to  keep?
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sandeepraghuvanshi
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PostPosted: Thu Apr 20, 2006 5:29 pm Post subject: Re: stability of pH Reply with quote

                                                   
Rajendran  wrote:                
What  are  the  ways  to  bring  pH  to  the  acceptable  level?  How  to  raise  or  decrease  pH?                

 A  stable  ph  is  more  importnat  than  an  "appropiate  ph".  Most  fresh  water  fishes  can  do  well  in  tap  water  or  water  that  we  drink,  except  that  you  need  to  decholrinate  it.
 The  main  reason  for  not  fiddling  with  ph  is  that  swings  in  ph  are  very  dangerous  for  fish,  kindly  remember  that  ph  is  measured  in  lograthmic  scale  which  means  that  water  at  ph  of  7  will  be  ten  times  more  alkaline  than  water  at  6  and  hundred  times  more  alkaline  than  ph  of  5.  
 A  more  relevant  example  would  be  a  very  strong  Hydrocholoric  acid  has  ph  of  "2"  whereas  a  much  weaker  formaic  acid  or  methnoic  acid  has  a  ph  of  2.4.
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