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http://indianaquariumhobbyist.com/community/ :: View topic - LED selection for the tank
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LED selection for the tank
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kapa
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PostPosted: Thu Oct 06, 2016 2:13 am Post subject: Re: LED selection for the tank Reply with quote

 Nice  discussion   Cheer
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Preeths
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PostPosted: Thu Oct 06, 2016 1:59 pm Post subject: Re: LED selection for the tank Reply with quote

 Ended  up  purchasing  this  for  driving  the  LED  in  series:
 
 http://www.ebay.in/itm/BEST-8-25-x-1w-LED-Drive-Power-Supply-Constant-Current-SMD-Light-Bar-Imported-/172350877065?hash=item2820e9ad89:g:KtAAAOSwV0RXvCcV
 
 Earlier  Plan  to  have  multiple  units  was  a  no  go  since  that  would  mean  too  many  wires  cluttering  up  the  looks.
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Nidhi
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PostPosted: Fri Oct 07, 2016 10:27 am Post subject: Re: LED selection for the tank Reply with quote

                                                   
Preeths  wrote  (View  Post):                
Ended  up  purchasing  this  for  driving  the  LED  in  series:
 
 http://www.ebay.in/itm/BEST-8-25-x-1w-LED-Drive-Power-Supply-Constant-Current-SMD-Light-Bar-Imported-/172350877065?hash=item2820e9ad89:g:KtAAAOSwV0RXvCcV
 
 Earlier  Plan  to  have  multiple  units  was  a  no  go  since  that  would  mean  too  many  wires  cluttering  up  the  looks.                

 
 That  driver  can  drive  15  to  30  nos  1w  LED,  we  can  safely  assume  that  25  nos  can  driven  with  out  burning  out  the  driver.
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Preeths
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PostPosted: Fri Oct 07, 2016 7:23 pm Post subject: Re: LED selection for the tank Reply with quote

 Kapa,
 
 Did  you  build  your  fixture?
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kapa
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PostPosted: Fri Oct 07, 2016 8:26 pm Post subject: Re: LED selection for the tank Reply with quote

                                                   
Preeths  wrote  (View  Post):                
Kapa,
 
 Did  you  build  your  fixture?                

 
 Not  yet  bro.  Busy  due  to  office.  Will  purchase  LEDs  within  couple  of  weeks  &  build  complete  setup  at  time  of  Deewali,  when  i  will  be  at  hometown  Thumbs Up  
 
 Progress:
 1)  substraste  :  Laterite  (Arrived)
 2)  filter  :  Internal  filter  (available)
 3)  ferts  :  DIY  (Ready)
 4)  lights  :  DIY  LED  (1W  OSRAM)  yet  to  be  prepared
 4)  Plants  :  will  order  additional  plants  
 
 
 Guys,
 Please  tell  me  the  name  of  plants  that  have  excellent  result  with  laterite  as  well  difficulty  level  is  easiest.
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Preeths
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PostPosted: Fri Oct 07, 2016 9:18 pm Post subject: Re: LED selection for the tank Reply with quote

 I  was  thinking  of  following  your  build....
 
 I  already  got  the  LED's,  The  rest  of  the  hardware  is  in  transit.  Will  build  it  over  this  week  end  or  next  week  endbased  on  the  arrival  of  all  the  parts.
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kapa
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PostPosted: Sat Oct 08, 2016 9:50 am Post subject: Re: LED selection for the tank Reply with quote

                                                   
Preeths  wrote  (View  Post):                
I  was  thinking  of  following  your  build....
 
 I  already  got  the  LED's,  The  rest  of  the  hardware  is  in  transit.  Will  build  it  over  this  week  end  or  next  week  endbased  on  the  arrival  of  all  the  parts.                

 
 Want  follow  me   Chuckle  I  am  not  that  much  expert  bro.  Yet  i  haven't  succeed  in  maintaining  the  tank.  Anyways  will  post  after  making  my  hood.
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Preeths
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PostPosted: Tue Oct 11, 2016 5:16 pm Post subject: Re: LED selection for the tank Reply with quote

 I  have  the  following  options  to  build  the  LED  array.  Each  box  represents  one  LED.  Which  option  is  better?  I  am  building  two  units  for  two  tanks.  I  don't  mind  experimenting  with  having  different  orientations  on  each  unit.
 
 Red  and  Blue  Boxes  represent   red  and  blue  LED's
 
 I  need  to  get  the  heat  sink.  I  need  to  understand  how  much  space  i  need  to  leave  between  LED's  All  of  them  are  1  W  LED's.  Max  length  of  the  heat  sink  can  be  24  inches,  I  need  to  know  how  wide  it  needs  to  be  to  accommodate  3  columns  of  LED.  
 
 The  current  Plan  is  to  use  a  2  or  3  mm  aluminium  Sheet  as  a  heat  sink.  If  I  get  a  proper  heat  sink  with  fins  how  wide  should  it  be?
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kapa
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PostPosted: Tue Oct 11, 2016 8:11 pm Post subject: Re: LED selection for the tank Reply with quote

                                                   
Preeths  wrote  (View  Post):                
I  have  the  following  options  to  build  the  LED  array.  Each  box  represents  one  LED.  Which  option  is  better?  I  am  building  two  units  for  two  tanks.  I  don't  mind  experimenting  with  having  different  orientations  on  each  unit.
 
 Red  and  Blue  Boxes  represent  ┬áred  and  blue  LED's
 
 I  need  to  get  the  heat  sink.  I  need  to  understand  how  much  space  i  need  to  leave  between  LED's  All  of  them  are  1  W  LED's.  Max  length  of  the  heat  sink  can  be  24  inches,  I  need  to  know  how  wide  it  needs  to  be  to  accommodate  3  columns  of  LED.  
 
 The  current  Plan  is  to  use  a  2  or  3  mm  aluminium  Sheet  as  a  heat  sink.  If  I  get  a  proper  heat  sink  with  fins  how  wide  should  it  be?                

 
 As  suggested  by  nidhi,  spacing  between  two  led's  should  be  2  inches  max.  I  would  suggest  you  to  use  Option  -2  as  it  will  spread  light  of  various  spectrum  into  the  entire  tank.
 
 For  heat  sink  you  may  use  aluminium  section  window  frame.  (might  be  cheaper  than  conventional  heat  sink)
 
 Are  going  to  use  lens,  acrylic  sheet  etc  ?
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Nidhi
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PostPosted: Tue Oct 11, 2016 9:18 pm Post subject: Re: LED selection for the tank Reply with quote

 @  Preeths,
          Yes  2x2  inch  matrix  will  be  best,  That  would  mean  you  would  need  a  plate  of  6  inches  by  18  inches  if  you  consider  leaving  an  inch  of  space  on  edges..   so  6  inches  wide  and  length  can  go  up  to  24  inches  to  accommodate  any  mounting  arrangement.
 I  think  option-3  will  be  good.
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Preeths
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PostPosted: Tue Oct 11, 2016 9:33 pm Post subject: Re: LED selection for the tank Reply with quote

 Thanks  Guys,
 
 I  will  build  option  2  and  option  3.  Should  be  done  with  at  least  one  build  by  next  Sunday  assuming  I  will  get  the  heat  sink  on  Saturday.  Any  place  I  can  buy  Aluminum  Rods?  4-6  mm  the  type  cloth  hangers  are  made  with.  I  plan  to  use  it  to  make  the  stand
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kapa
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PostPosted: Sun Oct 16, 2016 9:38 am Post subject: Re: LED selection for the tank Reply with quote

                                                   
Preeths  wrote  (View  Post):                
Thanks  Guys,
 
 I  will  build  option  2  and  option  3.  Should  be  done  with  at  least  one  build  by  next  Sunday  assuming  I  will  get  the  heat  sink  on  Saturday.  Any  place  I  can  buy  Aluminum  Rods?  4-6  mm  the  type  cloth  hangers  are  made  with.  I  plan  to  use  it  to  make  the  stand                

 
 Any  updates  please  ?
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Preeths
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PostPosted: Sun Oct 16, 2016 11:24 am Post subject: Re: LED selection for the tank Reply with quote

 Work  in  progress...LED  not  lighting  up  after  plugging  in  so  I  am  Trouble  shooting.  Got  good  heat  sinks  so  did  not  purchase  the  sheet.  Got  two  rows  of  12  Leds
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kapa
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PostPosted: Sun Oct 16, 2016 12:46 pm Post subject: Re: LED selection for the tank Reply with quote

                                                   
Preeths  wrote  (View  Post):                
Work  in  progress...LED  not  lighting  up  after  plugging  in  so  I  am  Trouble  shooting.  Got  good  heat  sinks  so  did  not  purchase  the  sheet.  Got  two  rows  of  12  Leds                

 
 One  suggestion  (although  not  asked  Chuckle)  test  the  LEDs  prior  to  install  no  hood.  BTW  which  type  of  connection  you  are  using  series  or  parallel  ?  Have  you  added  Potentiometer  to  control  intensity(Brightness)  of  LED  ?
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Preeths
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PostPosted: Sun Oct 16, 2016 5:39 pm Post subject: Re: LED selection for the tank Reply with quote

 I  am  not  using  potentiometers.  Using  a  serial  connection.  Its  working  now  but  got  a  shock.  Have  to  see  where  the  short  is  happening.
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