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http://indianaquariumhobbyist.com/community/ :: View topic - LED Build Journal - Completed and some experiments
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LED Build Journal - Completed and some experiments
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kapa
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PostPosted: Sun Nov 27, 2016 8:24 pm Post subject: Re: LED Build Journal - Completed Reply with quote

                                                   
Preeths  wrote  (View  Post):                
1.  You  need  a  driver  that  supplies  1500mA  and  36V  current.  A  3000mA  36V  driver  will  burn  the  LED's  (I'm  assuming  you  will  use  10  LEDs)
 
 2.  Each  LED  will  cause  a  voltage  drop  0f  3.6  volts.  Since  the  LED  is  a  semiconductor,  this  minimum  voltage  is  needed.  In  a  series  connection  when  you  have  8  LED's  the  voltage  drop  is  28.8v.  The  Voltage  supplied  by  the  driver  is  36v  which  is  more  than  required,  hence  it  works.  With  11  led's  the  voltage  required  is  39.6v  This  is  more  than  the  capacity  of  the  driver,  hence  it  will  not  light  up.
 
 3.  use  DC-DC  converters,  but  you  won't  get  the  exact  match.                

 
 Thanks  bro  !  Now  i  got  it.  
 Means  36V  won't  harm  LEDs  ?  Safety  of  LED  depends  on  current,  isn't  it  ?  
 Do  i  need  to  add  resistor,  if  i  used  driver  of  rating  recommended  by  you  ?   
 I  won't  be  longer  to  use  pot  to  adjust  brightness  since  LEDs  will  be  in  series,right  ?
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Preeths
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PostPosted: Mon Nov 28, 2016 1:31 pm Post subject: Re: LED Build Journal - Completed Reply with quote

 You  don't  need  a  resistor  if  you  are  using  a  driver.
 You  can  use  a  lower  capacity  driver(one  that  supplies  lesser  current)  to  reduce  the  brightness  permanently.
 
 Not  sure  what  you  meant  in  the  last  line
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kapa
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PostPosted: Mon Nov 28, 2016 11:20 pm Post subject: Re: LED Build Journal - Completed Reply with quote

                                                   
Preeths  wrote  (View  Post):                
You  don't  need  a  resistor  if  you  are  using  a  driver.
 You  can  use  a  lower  capacity  driver(one  that  supplies  lesser  current)  to  reduce  the  brightness  permanently.
 
 Not  sure  what  you  meant  in  the  last  line                

 
 I  mean,  if  potentiometer  is  used  brightness  of  each  LED  will  get  affected  as  LEDs  will  be  in  series,  however  parallel  combination  permits  efficient  use  of  potentiometer
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Preeths
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PostPosted: Tue Nov 29, 2016 12:08 pm Post subject: Re: LED Build Journal - Completed Reply with quote

                                                   
kapa  wrote  (View  Post):                
                                                 
Preeths  wrote  (View  Post):                
You  don't  need  a  resistor  if  you  are  using  a  driver.
 You  can  use  a  lower  capacity  driver(one  that  supplies  lesser  current)  to  reduce  the  brightness  permanently.
 
 Not  sure  what  you  meant  in  the  last  line                

 
 I  mean,  if  potentiometer  is  used  brightness  of  each  LED  will  get  affected  as  LEDs  will  be  in  series,  however  parallel  combination  permits  efficient  use  of  potentiometer                

 
 You  can  use  the  potentiometer  in  parallel   to  the  LED.  Just  ensure  the  total  current  supplied  to  both  LED  and  Potentiometer  does  not  exceed  the  value  rated  for  the  led.  Otherwise  you  risk  passing  too  much  current  through  the  LED  if  you  have  turned  the  potentiometer  the  wrong  way  and  switch  it  on.  People  and  kids  will  fiddle  with  it  if  its  within  each.
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kapa
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PostPosted: Fri Dec 02, 2016 4:06 am Post subject: Re: LED Build Journal - Completed Reply with quote

                                                   
Preeths  wrote  (View  Post):                
                                                 
kapa  wrote  (View  Post):                
                                                 
Preeths  wrote  (View  Post):                
You  don't  need  a  resistor  if  you  are  using  a  driver.
 You  can  use  a  lower  capacity  driver(one  that  supplies  lesser  current)  to  reduce  the  brightness  permanently.
 
 Not  sure  what  you  meant  in  the  last  line                

 
 I  mean,  if  potentiometer  is  used  brightness  of  each  LED  will  get  affected  as  LEDs  will  be  in  series,  however  parallel  combination  permits  efficient  use  of  potentiometer                

 
 You  can  use  the  potentiometer  in  parallel  ┬áto  the  LED.  Just  ensure  the  total  current  supplied  to  both  LED  and  Potentiometer  does  not  exceed  the  value  rated  for  the  led.  Otherwise  you  risk  passing  too  much  current  through  the  LED  if  you  have  turned  the  potentiometer  the  wrong  way  and  switch  it  on.  People  and  kids  will  fiddle  with  it  if  its  within  each.                

 
 Nice  idea  !  Will  definitely  follow  this.  Thanks  .
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Manya
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PostPosted: Thu Dec 15, 2016 6:41 pm Post subject: Re: LED Build Journal - Completed Reply with quote

 Hi  All,
 
 Can  you  please  check  this  link  &  suggest  if  this  would  be  good  for  my  tank  of  size  4x2x2.
 Its  a  fish  only  tank
 Will  this  strip  of  5  m  provide  clear  visibility.
 
 i  know  i  am  choosing  the  easier  option  but  then  still  do  guide.
 
 http://www.ebay.in/itm/SMD-5050-RGB-LED-Strip-Lights-DC12V-Adapter-WaterProof-44-Key-Remote-5-M-/271999039616?var=570818941230
 
 Thanks  in  advance
 
 Manish  K
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Preeths
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PostPosted: Fri Dec 16, 2016 12:31 am Post subject: Re: LED Build Journal - Completed Reply with quote

                                                   
Manya  wrote  (View  Post):                
Hi  All,
 
 Can  you  please  check  this  link  &  suggest  if  this  would  be  good  for  my  tank  of  size  4x2x2.
 Its  a  fish  only  tank
 Will  this  strip  of  5  m  provide  clear  visibility.
 
 i  know  i  am  choosing  the  easier  option  but  then  still  do  guide.
 
 http://www.ebay.in/itm/SMD-5050-RGB-LED-Strip-Lights-DC12V-Adapter-WaterProof-44-Key-Remote-5-M-/271999039616?var=570818941230
 
 Thanks  in  advance
 
 Manish  K                

 
 i'm  not  sure  .....  shop  around  ita  a  lot  cheaper
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mbuna435
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PostPosted: Fri Dec 16, 2016 11:02 am Post subject: Re: LED Build Journal - Completed Reply with quote

 [quote="Manya";p="355992"]Hi  All,
 
 Can  you  please  check  this  link  &  suggest  if  this  would  be  good  for  my  tank  of  size  4x2x2.
 Its  a  fish  only  tank
 Will  this  strip  of  5  m  provide  clear  visibility.
 /quote]
 
 I  went  with  the  same  approach  assuming  that  it  will  be  bright  for  my  3  feet  tank.  But  at  the  end  found  it  to  be  dull  than  my  6W  hoper  208  LED.  But  if  you  like  bit  of  dull  lighting  in  your  aquarium  then  it  may  suit  your  need.  One  advantage  is  that  you  can  change  the  color  of  the  LED  which  may  go  well  with  the  fish  only  tank.
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Manya
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PostPosted: Fri Dec 16, 2016 2:12 pm Post subject: Re: LED Build Journal - Completed Reply with quote

 Thanks  Preets  &  Mbuna435..
 
 Did  check  with  the  seller,  he  to  confirmed  that  the  light  would  not  be  sufficient  for  aquarium  lighting.
 
 so  looks  like  will  have  to  check  other  options..
 
 Thanks
 Manish  K
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Preeths
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PostPosted: Sun Jan 15, 2017 11:20 pm Post subject: Re: LED Build Journal - Completed Reply with quote

 My  hair  Grass  Carpet  which  was  lush  had  started  looking  like  hair  on  a  bald  man's  head,  never  enough.  I  went  ahead  and  doubled  the  number  of  led's,  There  is  about  46  1  W  LED's  36  -White,  6  red  and  4  blue.  Totally  about  4600  lumens,  4  inches  above  the  waters  surface.  This  is  brighter  than  my  original  PLL  setup.  I  will  give  this  about  an  other  6  weeks  to  check  any  improvement  in  growth  of  hair  grass.  Just  over  2  days  and  my  crypts  are  showing  an  improvement.  Got  an  other  tank  with  9  -  3WCree  LED's.  The  plants  are  growing  fine....  this  tank  has  only  Anubias  and  ferns.
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PostPosted: Sun Mar 12, 2017 5:09 pm Post subject: Re: LED Build Journal - Completed Reply with quote

 8  weeks  later,  my  hair  grass  carpet  bounced  back.  it  is  looking  good  now.  you  can  see  the  picture  as  it  is  today  HERE
 
 I  made  a  new  LED  panel  with  10W  Cree  LED's  which  is  much  more  brighter.  10  number  of  LED  driven  at  1500mA  thats  50W  total.  i  placed  it  on  the  same  tank,  so  you  can  see  a  comparison  HERE
 
 Since  this  does  not  have  red  and  blus  LED's,  the  neon  tetra's  look  much  more  dull.
 
 The  tank  will  continue  with  the  CREE  LED  setup  for   the  next  8  weeks.  lets  see  what  happens
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PostPosted: Sun Mar 12, 2017 5:15 pm Post subject: Re: LED Build Journal - Completed Reply with quote

 I  will  be  making  an  other  LED  panel  using  only  FULL  spectrum  LED's  to  compare  growth  rates.  This  setup  will  make  the  tank  look  pinkish,  but  what  the  hell,  im  going  to  give  it  a  try...
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PostPosted: Mon Mar 13, 2017 5:04 pm Post subject: Re: LED Build Journal - Completed Reply with quote

 Hi  Preeths
 
 How  are  the  tanks  doing  with  LED  Now?
 
 Is  there  any  electricity  consumption  lowering  after  using  led?  Thumb Up
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Preeths
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PostPosted: Mon Mar 13, 2017 6:39 pm Post subject: Re: LED Build Journal - Completed Reply with quote

 Yes,  Im  using  126  watts  of  energy  for  lights  over  3  tanks  now,  compared  to  about  180  W  before.  But  the  important  thing  is  that  the  amount  of  light  in  Lumens  going  into  the  tank  is  more  than  double  of  what  was  there  using  PLL  fixtures.
 
 The  most  important   aspect  of  LED's  is  that  the  light  is  directional.  So  even  with  out  the  use  of  reflectors  most  of  the  light  goes  down  into  the  tank.
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PostPosted: Tue Mar 14, 2017 10:06 am Post subject: Re: LED Build Journal - Completed Reply with quote

 outstanding.   Thumb Up   Clapping  
 
 are  you  planning  to  keep  any  carpet  plants  lately,  if  so,  lets  see  the  results  Smile
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