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http://indianaquariumhobbyist.com/community/ :: View topic - Let's talk about nutrients in water.
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Let's talk about nutrients in water.

 
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vijaymcud
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PostPosted: Mon Feb 05, 2018 6:56 pm Post subject: Let's talk about nutrients in water. Reply with quote

 Is  there  anyone  in  this  forum  who  has  run  comprehensive  tests  on  a)  Metro  water  b)  Bore  water.  Share  the  results  in  terms  of  general  hardness,  carbonate  hardness,  pH,  nitrates,  nitrites,  ammonia,  phosphates,  calcium,  magnesium,  trace  elements,  toxic  elements  etc.
 
 My  house  in  Chennai  is  just  2  kilometers  from  the  ocean.  Bore  water  could  almost  be  used  for  a  salt  water  aquarium.  TDS  reads  400  PPM.  Metro  water  is  around  250  PPM  TDS.  I  understand  that  these  things  vary  significantly  between  different  areas  and  different  metro  water  units  which  process  these  waters  from  different  sources.  However,  just  a  ballpark  figure  and  how  (why)  successful  you  have  been  in  creating  a  planted  aquarium  with  this  water  would  be  useful.
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anandjm
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PostPosted: Fri Feb 09, 2018 3:56 am Post subject: Re: Let's talk about nutrients in water. Reply with quote

 Although  I  do  not  currently  live  in  Chennai,  I  can  share  some  experience.  Firstly  TDS  can  be  either  due  to  salinity  or  due  to  GH+KH+other  disolved  elements.  My  house  in  Chennai  is  around  16kms  from  the  Ocean  and  the  well  water  has  a  TDS  of  around  350-400.  Bore  water  in  the  same  area  has  1.5-2x  times  this  TDS.
 
 In  Hyderabad  (where  I  currently  live)  I  can  share  some  of  my  experiments.
 1.  RO  water  will  kill  plants.  
 2.  The  best  success  I've  had  with  a  10G  low  tech  planted  tank  with  shrimp  and  guppies  is  a  TDS  around  200-250  (mix  of  bore  and  RO  water)  (monthly  water  changes),  with  a  KH  ~6.  
 3.  With  a  40G  high  tech  tank  though,  I  maintain  a  TDS  of  130-150  (before  dosing  ferts),  weekly  water  changes  of  30-40%  KH  ~2.  I've  never  bothered  measuring  GH  since  bore  water  would  contain  significant  amounts  of  calcium  and  magnesium.
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vijaymcud
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PostPosted: Sat Feb 10, 2018 8:21 am Post subject: Re: Let's talk about nutrients in water. Reply with quote

 That's  an  interesting  lot  of  ¬†information  Anand.  The  fact  that  bore  water  contains  calcium  and  magnesium  is  exactly  what  I  wanted  to  hear.  I  cannot  have  a  heavy  dosage  regime  as  yours  as  maintenance  is  outsourced  to  my  poor  mom.  A  small  2  feet  by  1  feet  walstad  tank,  with  mud  and  gravel  cover.  Around  1/30  of  what  you  would  dose  and  50  percent  change  every  month.  Utter  easy  plants  like  sag,  sword,  hornwort,  wisteria  etc.  I  am  planning  to  use  metro  water  which  I  treat  for  chlorine  and  chloramine.  Around  250  ppm  as  we  agree.  The  thing  is  these  guys  remove  all  the  nutrients.  Bore  water  is  too  hard.  Mixing  things  is  complicated  for  me  in  the  long  run.  Any  thoughts?
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anandjm
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PostPosted: Mon Feb 12, 2018 5:37 am Post subject: Re: Let's talk about nutrients in water. Reply with quote

 With  my  low  tech  tank  I  did  not  do  any  dosing  except  for  occasional  dosage  of  Seachem's  pottasium.  I  only  monitored  the  TDS.  Just  keep  TDS  down  to  around  250.  If  not  heavily  planted,  then  keep  a  pothos  plant  growing  either  out  of  your  aquarium  or  out  of  your  HOB  to  control  nitrate  levels.  You  should  be  able  to  handle  bimonthly  water  changes  so  long  as  you  top  of  the  aquarium  with  RO  water.  You  can  use  Vallisneria,  which  love  carbonates.  Just  control  lighting  in  your  low  tech  tank  or  you  could  end  up  with  BBA  which  love  organics  (if  you  don't  do  regular  water  changes)
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