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http://indianaquariumhobbyist.com/community/ :: View topic - Cloudy Tank a day after PWC ......????
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Cloudy Tank a day after PWC ......????

 
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Abhay_11
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PostPosted: Wed May 17, 2006 12:31 pm Post subject: Cloudy Tank a day after PWC ......???? Reply with quote

 Hi  everyone,
 
 The  tank:
 42"x18"x24"(H),  internal  power  filter  1200L/hr,  medium  gravel,  some  rocks/pebbles  and  resin  tank  ornament.
 
 Inhabitants:
 2x  6"  Red  Tiger  Oscars
 
 Duration  running:
 8  weeks
 
 Do  gravel  vac  to  remove  the  muck  the  oscars  make  and  change  about  40%  water  twice  a  week.  What  I  have  observed  is  that  the  water  becomes  cloudy  the  day  after  the  PWC  -  like  a  bacterial  bloom  -  what  could  be  the  reason?
 
 I  did  tests  and  the  Ammonia  and  Nitrites  are  0  and  Nitrates  are  around  20ppm  before  PWC  and  post  PWC  the  nitrates  drop  to  almost  nil.
 
 This  has  started  happening  only  in  this  tank  and  have  been  seeing  this  for  the  past  2-3  weeks.  Do  I  need  to  start  getting  worried  or  is  it  still  in  the  process  of  stabilizing  -  Nitrogen  cycle?
 
 Thanks,
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rahulk
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PostPosted: Wed May 17, 2006 12:45 pm Post subject:  Reply with quote

 Hi  Abhay,
                       It  could  be  a  bacterial  bloom  or  mismatch  of  water  parameters.
 
 What  is    the  PH  and  KH  of  your  tap  VS  your  aquarium  water,  If  they  are  different  there  could  be  some  precipetation  of  salts  which  causes  cloudyness  in  water.
 
 Have  you  tested  the  tap  water  for  ammonia  and  nitrites  ?
 
 My  advise  would  be  not  to  do  so  much  of  cleaning.  partial  water  changes  once  a  week  and  gravel  vaccuming  2  times  a  month  will  be  sufficient.  This  would  give  the  nitrifying  bacteria  time  to  colonise  you  gravel.
 
 But  check  the  water  for  ammonia  and  nitrite  ,  if  they  cross  the  safe  level  do  a  partial  water  change
 
 Please  correct  if  i  am  wrong.
 
 rahul
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Abhay_11
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PostPosted: Wed May 17, 2006 12:59 pm Post subject:  Reply with quote

 Hi  Rahul,
 
 Thanks  for  your  reply.
 
 
                                                 
Quote:                
What  is  the  PH  and  KH  of  your  tap  VS  your  aquarium  water                

 
 Tap  water  pH  is  7.0,  0  Ammonia  and  nitrites,  Nitrates  less  than  10ppm
 Do  not  have  test  kit  for  KH  -  will  need  to  get  one  and  test  -  but  Pune  Municipal  water  is  not  hard  -  its  quite  soft  water  from  what  I  have  heard.  The  water  is  stored  for  over  a  day  before  it  goes  into  the  tank.
 
 
                                                 
Quote:                
My  advise  would  be  not  to  do  so  much  of  cleaning.                

 
 Have  read  everywhere  that  Oscars  need  clean  tanks  else  they  may  get  HITH  and  hence  the  gravel  vac  regime.  Also  hate  to  see  the  tank  dirty  -  the  oscars  are  great  poopers!  Hmmmm  -  so  now  I  am  a  bit  confused  -  maybe  I  should  change  only  20%  to  25%  water  -  but  then  can't  clean  up  the  whole  surface  area  in  the  time  25%  water  gets  siphoned  out.
 
 Thanks,
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rahulk
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PostPosted: Wed May 17, 2006 1:15 pm Post subject:  Reply with quote

 Hi  
 What  is  the  filteration  you  have  in  your  tank?
 
 Rahul
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Abhay_11
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PostPosted: Wed May 17, 2006 1:19 pm Post subject:  Reply with quote

                                                   
Quote:                
Hi  
 What  is  the  filteration  you  have  in  your  tank?  
 
 Rahul                

 
 Hi  Rahul,
 
 Its  a  1200L/hr  submersible  power  filter  with  sponge  media  -  make  either  Atman  or  Boyu  -  don't  recollect  which.  I  feel  its  doing  a  decent  job  -  the  sponges  are  fairly  soiled  when  I  clean  them  once  a  week.  The  sponges  are  cleaned  in  the  tank  water  that  is  siphoned  so  as  to  retain  some  of  the  useful  bacteria.
 
 Thanks,
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sandeepraghuvanshi
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PostPosted: Wed May 17, 2006 1:40 pm Post subject:  Reply with quote

 Hi  friend
 It  is  a  bacterial  bloom  that  you  see  in  your  tank  which  is  often  seen  in  a  new  tank.  Your  very  through  gravel  cleaning  is  killing  your  bacteria  colony.
 It  should  go  away  in  day  or  two  by  itself.
 I  don't  think  you  have  to  worry.
 Your  nitrates  are  on  the  higher  side.
 Cut  down  on  gravel  cleaning,  and  continue  with  water  changes.
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sudhirvr
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PostPosted: Wed May 17, 2006 2:04 pm Post subject:  Reply with quote

 IMO  Food  is  also  an  important  factor  in  this  matter.  I  have  experienced  this  with  my  oscars,  when  i  feed  BHM  or  prawns,  the  water  gets  cloudy  in  3-4  days  in  spite  of  the  filter.  Only  option  is  water  changes  (50%  once  in  2  days).
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sandeepraghuvanshi
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PostPosted: Wed May 17, 2006 2:24 pm Post subject:  Reply with quote

                                                   
sudhirvr  wrote:                
IMO  Food  is  also  an  important  factor  in  this  matter.  I  have  experienced  this  with  my  oscars,  when  i  feed  BHM  or  prawns,  the  water  gets  cloudy  in  3-4  days  in  spite  of  the  filter.  Only  option  is  water  changes  (50%  once  in  2  days).                

 
 Hi  Sudhir
 Abhay  is  experiencing  hazy  water  after  water  change.
 This  normally  happens  when  tank  starts  cycling
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Abhay_11
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PostPosted: Wed May 17, 2006 3:13 pm Post subject:  Reply with quote

 Hi  Sandeep,
 
 Thank  you  for  the  inputs.
 
 
                                                 
Quote:                
Your  very  through  gravel  cleaning  is  killing  your  bacteria  colony.                

 
 Ok  -  so  excess  cleaning  also  can  be  a  problem!!!!
 
 
                                                 
Quote:                
It  should  go  away  in  day  or  two  by  itself.                  

 
 Yes  it  does.
 
 
                                                 
Quote:                
I  don't  think  you  have  to  worry.                

 
 I  had  also  thought  that  the  tank  was  cycling.  The  doubt  crept  in  my  mind  as  its  over  8  weeks  that  the  tank  is  running  and  the  fish  seem  quite  happy  and  thought  the  cycle  would  have  been  set  by  now.  
 
 Haven't  seen  this  happening  in  the  other  2  tanks.  The  other  Oscar  tank  (exactly  identical  set-up)  also  has  a  similar  regime  (infact  closer  to  70%  WC  as  it  has  a  8"  pleco  that  poops  even  more  than  the  Oscars)  and  haven't  noticed  this  happening  in  this  tank.  This  tank  has  been  running  for  over  4-5  months  now.
 
 The  third  is  a  planted  tank  and  no  gravel  vac  is  being  done  -  only  20%  WC  every  week.  Had  read  on  one  of  Madan's  posts  that  even  that  is  not  necessary  for  planted  -  only  water  top  up  as  reqd  keeps  the  tank  stable  and  is  good  for  plant  growth  -  so  will  be  following  that  as  well.
 
 
                                                 
Quote:                
Your  nitrates  are  on  the  higher  side.                

 
 That  is  one  of  the  reasons  why  PWC  twice  a  week  and  is  20ppm  really  very  high?  Had  thought  upto  40  is  ok  with  the  fish?
 
 
                                                 
Quote:                
Cut  down  on  gravel  cleaning,  and  continue  with  water  changes.                

 
 Now  thats  what  I  will  do  -  PWC  twice  a  week  -  gravel  vac  once  a  week.
 
 Thanks,
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sandeepraghuvanshi
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PostPosted: Wed May 17, 2006 3:31 pm Post subject:  Reply with quote

                                                   
Abhay_11  wrote:                
Haven't  seen  this  happening  in  the  other  2  tanks.  The  other  Oscar  tank  (exactly  identical  set-up)  also  has  a  similar  regime  (infact  closer  to  70%  WC  as  it  has  a  8"  pleco  that  poops  even  more  than  the  Oscars)  and  haven't  noticed  this  happening  in  this  tank.  This  tank  has  been  running  for  over  4-5  months  now.                

 As  this  tank  is  a  older  one  bacterial  colony  would  be  much  larger  in  numbers
 
                                                 
Quote:                

 The  third  is  a  planted  tank  and  no  gravel  vac  is  being  done  -  only  20%  WC  every  week.  Had  read  on  one  of  Madan's  posts  that  even  that  is  not  necessary  for  planted  -  only  water  top  up  as  reqd  keeps  the  tank  stable  and  is  good  for  plant  growth  -  so  will  be  following  that  as  well.                

 That  is  the  beauty  of  planted  tanks,  no  problems  when  properly  set  up.  I  do  a  weekly  top  up  and  monthly  20%  w/c
 
 
                                                 
Quote:                
That  is  one  of  the  reasons  why  PWC  twice  a  week  and  is  20ppm  really  very  high?  Had  thought  upto  40  is  ok  with  the  fish?                

 No  40  is  too  high,  aim  for  20-25.
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Abhay_11
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PostPosted: Wed May 17, 2006 3:38 pm Post subject:  Reply with quote

 Hi  Sandeep,
 
 
                                                 
Quote:                
No  40  is  too  high,  aim  for  20-25.                

 
 Then  my  tanks  are  fine  -  have  never  crossed  20ppm  yet.  I  had  mentioned  that  the  count  was  20ppm  pre-PWC  in  my  first  post  and  thought  you  meant  that  was  also  too  high.
 
 Thanks,
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