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http://indianaquariumhobbyist.com/community/ :: View topic - whats different between rock salt and sea salt
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whats different between rock salt and sea salt
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raindeepak4u
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PostPosted: Sun May 25, 2008 12:40 pm Post subject: whats different between rock salt and sea salt Reply with quote

 hi  any  one  tell  me  the  difference  between  the  rock  salt  and  sea  salt.............?
 why  we  are  not  use  the  rocksalt  for  marine  setup?
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pree
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PostPosted: Sun May 25, 2008 3:43 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

 Rock  Salt  basically  a  non  processed  form  of  table  salt  (chemical  formula  NaCl).  By  non-processed,  I  mean  it  is  not  processed  to  contain  added  products  like  iodine  which  processed  kitchen  salts  possess.  Nor  does  it  have  the  free  flowing  nature  of  the  processed  salt.  In  the  fish  keeping  hobby  we  use  rock  salt  as  we  don't  want  iodine  in  our  tank  water.  
 
 Sea  Salt  has  a  more  complicated  composition  consisting  of  various  elements  like  magnesium,  sodium,  potassium   in  compound  form.  It  is  not  NaCl  alone.  
 
 Hence  obviously  we  can't  use  rock  salt  as  a  substitute  for  sea  salt.
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DJ_Rocky
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PostPosted: Sun May 25, 2008 6:31 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

 Rock  Salt  :  Lack  of  vital  Trace  Elements.
 Sea  Salt  :  Fully  loaded  with  all  vital  Trace  Elements  which  are  issential  for  marine  fish  and  inverts.
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retro_gk
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PostPosted: Mon May 26, 2008 10:41 am Post subject: Re: whats different between rock salt and sea salt Reply with quote

 well,  strictly  speaking,  "rock  salt"  is  salt  that  is  mined.  In  common  usage,  it  has  come  to  mean  crystallised  sea  salt  that  has  not  been  processed  and  has  a  large  crystalline  structure.
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PostPosted: Mon May 26, 2008 1:51 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

 Rahul,
 
 I  really  love  your  Trivia  inputs.  Wonder  where  you  get  them  from.   Very Happy   
 
 But  do  the  salt  crystallized  from  sea  water  loose  its  Trace  Elements  which  are  essential  for  marine  fish  and  inverts?  Or  can  we  use  it?
 
 I  am  also  interested  in  Deepak's  question.
 
 Regards,
 Nayak.
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retro_gk
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PostPosted: Mon May 26, 2008 2:24 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

 No,  crystallised  sea  salt  should  not  lose  anything  that  was  dissolved  in  the  water.  The  drawback  is,  unless  the  water  came  from  a  clean  source,  you  are  likely  to  pick  up  a  lot  of  impurities  as  well.
 
 It  is  fairly  safe  to  use  with  fish.  Red  Sea  is  basically  a  packaged  version  of  sea  salt.  However,  I'd  try  it  with  sergeant  majors  or  dominos  first  and  acclimatise  them  carefully.
 
 The  best  thing  to  do,  of  course,  would  be  to  dissolve  about  30  grams  in  a  liter  of  water  and  take  it  to  you  friendly  neighbourhood  chemist  for  a  detailed  quantitative  and  qualitative  analysis.
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deepesh
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PostPosted: Mon May 26, 2008 3:49 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

                                                   
Quote:                
...your  friendly  neighbourhood  chemist...                

 
 I  wish  I  had  one  of  those.  (grinning)
 
 deepesh
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retro_gk
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PostPosted: Mon May 26, 2008 5:33 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

                                                   
deepesh  wrote  (View  Post):                
                                                 
Quote:                
...your  friendly  neighbourhood  chemist...                

 
 I  wish  I  had  one  of  those.  (grinning)
 
 deepesh                

 
 All  you  need  is  love  money...  Very Happy
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pree
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PostPosted: Mon May 26, 2008 6:38 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

 Hi  Rahul,
 
 I  differ  a  bit  from  your  opinion  here...
 
 Rock  Salt  that  we  get  in  the  market  (local  name  here  is  'khada  namak')  ia  basically  mineral  halite  whose  chemical  composition  is  NaCl  with  impurities  like  gypsum  and  potasium  compounds.  Due  to  the  presence  of  these,  it  is  considered  a  cheap  substitute  for  table  salt  which  is  processed  to  remove  the  impurities  and  add  iodine  which  is  essential  for  human  growth  and  development.
 
 On  the  other  hand  sea  salt  have  chlorides,  sulphates,  calcium,  sodium,  potassium,  magnesium  etc.  
 The  calcium  gives  the  sea  water  its  pH.  
 
 If  we  dissolve  rock  salt  in  normal  water  we  wont  get  the  pH  that  is  obtained  on  dissolving  sea  salt  in  water.  I  just  tested  this  on  found  the  pH  of  the  rock  salt  I  have  tp  be  7.4  while  the  sea  salt  gives  me  8.3...So  in  my  opinion  rock  salt  will  be  disaster  for  a  marine  tank  if  used  by  itself  as  a  substitute.
 
 Please  correct  me  if  I'm  wrong.
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deepesh
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PostPosted: Mon May 26, 2008 7:35 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

                                                   
Quote:                
 well,  strictly  speaking,  "rock  salt"  is  salt  that  is  mined                

 
 As  has  been  pointed  out  proper  rock  salt  is  mined.  These  deposits  occur  due  to  evaporation  of  water  from  lakes/seas.  Since  some  of  them  formed  in  lakes  or  primordial  seas  their  composition  rarely  matches  the  present  seas.
 
 On  the  other  hand  what  retro_gk  has  pointed  out  is  that  what  is  often  commonly  marketed  as  rock  salt  is  not  truly  rock  salt  but  unprocessed  sea  salt  -  formed  in  salt  pans  and  marketed  without  much  processing.  These  are  safe  in  the  sense  that  they  are  truly  quite  close  to  the  current  marine  composition.
 
 Of  course  there  are  impurities...  http://en.wikipedia.org/wiki/Salt_evaporation_pond
 
 deepesh
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TIMS
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PostPosted: Mon May 26, 2008 8:18 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

 Ok.....how  is  Sendha  Namak  different  from  Rock  Salt??
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rahulk
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PostPosted: Mon May 26, 2008 8:56 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

 if  you  use  rock  salt.  ie  unrefined  salt  from  the  pans.  then  you  will  be  adding  a  lot  of  impurities  into  your  system.Mainly  organics
 I  guess  It  should  be  okay  if  the  water  is  filtered  via  some  micron  filter  as  soon  as  you  mix  it(before  anything  starts  de-composing).
 
 It  is  claimed  that  synthetic  sea  salt  have  added  stuff  to  maintain  the  PH,  Also  the  calcium  and  magnesium  are  at  higher  concentration  than  the  natural  sea  water.  All  this  is  easy  enough  to  duplicate.
 
 Synthetic  salt  is  IMO  just  a  matter  of  convenience  and  i  have  had  good  success  with  Red  sea  salt  mix.  I  have  not  had  the  opportunity  to  use  anything  else.
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rahulk
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PostPosted: Mon May 26, 2008 8:59 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

 Some  one  had  started  an  experiment  with  salt  that  was  made  by  himself.
 i  dont  recall  what  the  outcome  was.
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Madan
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PostPosted: Mon May 26, 2008 9:32 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

 Now  tell  me  what  is  Sendha  Namak  ?  Very Happy
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PostPosted: Mon May 26, 2008 10:38 pm Post subject: Re: whats different between rock salt and sea salt Reply with quote

 Hi  Madan,
 Sendha  namak  is  again  a  mined  salt,similar  to  black  salt,its  a  bit  pinkish  in  colour  and  was  suggested  by  Ramdev  Maharaj(The  Yoga  guru)  as  an  alternate  to  the  common  salt,this  is  supposed  to  be  very  good  for  people  suffering  from  High  blood  pressure.I  have  yet  to  try  that  Smile  
 Regards
 Shishir  kamat
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