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http://indianaquariumhobbyist.com/community/ :: View topic - Sourcing DIY Led Parts
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Sourcing DIY Led Parts

 
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mohanmathavan
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Joined: Feb 08, 2018
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PostPosted: Tue Apr 24, 2018 6:48 pm Post subject: Sourcing DIY Led Parts Reply with quote

 I  want  to  make  DIY  Led  setup  for  my  aquarium.  My  tank  size  is  18  *  12  *  14  inch.  I  gone  through  various  posts  in  this  forum  and  finalized  my  plan.  I  planned  to  use  3  watt  cool  white  led  -  10,  1  watt  blue  led  -  3,  1  watt  red  led  -  3,  1  watt  blue  led  -  3,  25W  0.6  A  led  driver  for  my  setup.
 
 Next  I  tried  sourcing  the  materials  from  SP  road  Bangalore.  I  tried  few  shops  in  SP  Road,  but  I  could  not  find  CREE  or  EDISON  Brand  LED.  I  am  getting  only  Chinese  made  LED  with  Star  PCB  sold  separately  for  the  LED.  I  even  tried  in  Coimbatore  also,  I  couldn't  find  shops  selling  it.  I  got  a  25W  0.7A  led  driver  and  0.3  A  Led  driver  from  SP  Road.  But  I  want  to  buy  PWM  dimmable  driver  which  also  i  couldn't  find  in  SP  Road.  They  suggested  me  to  check  in  Chickpet  for  the  drivers.  Next  week  i  will  try  to  check  in  Chickpet.  
 
 Now  How  can  i  get  the  CREE  or  EDISON  Led  in   Bangalore  or  Coimbatore?  Whether  getting  CREE  LED's  from  aliexpress  is  a  good  option?  Also  anyone  know  where  to  find  pwm  dimmable  led  drivers  in  bangalore?
 
 Also  whether  my  planned  LED  setup  is  good  for  planted  aquarium  with  DIY  CO2?
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Preeths
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Joined: Nov 07, 2007
Posts: 2015
Location: Bangalore

Status: Offline
PostPosted: Tue Apr 24, 2018 7:19 pm Post subject: Re: Sourcing DIY Led Parts Reply with quote

 IMO  its  better  to  get  pressurized  CO2  before  worrying  about  lighting.  If  you  do  not  have  good  Co2,  lighting  does  not  matter.  You  will  only  be  able  to  grow  Anubias,  ferns  and  some  common  stem  plants.
 
 What  do  you  really  want?  a  minimalist  aquascape  or  a  complex  aquascape  with  demanding  plants?
 
 I  would  suggest  that  you  use  CFL  or  the  common  2  feet  LED  tube  light  to  start  with.  Unpredictable  DIY  CO2  will  cause  Algae.  Giving  us  a  idea  of  what  you  want  in  the  planted  tank  will  make  it  easier  for  us  to  respond.
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mohanmathavan
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PostPosted: Tue Apr 24, 2018 7:53 pm Post subject: Re: Sourcing DIY Led Parts Reply with quote

 Eventually  I  want  to  go  for  a  pressurized  CO2  setup.  may  be  after  3  4  months.  This  is  the  first  time  i  am  keeping  planted  aquarium  so  I  am  looking  for  minimalist  aquascape  with  dwarf  hair  grass,  Alternanthera  and  some  medium  req  plants.  Fauna  would  be  guppies  and  tetra.  I  will  be  using  ADA  or  Controsoil  substrate.   
 
 I  want  to  build  dimmable  led  light,  so  it  may  help  to  control  algae  issues.  Just  a  hope   Smile
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Nidhi
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Joined: Nov 23, 2011
Posts: 1877
Location: Bangalore, Prakashnagar.

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PostPosted: Wed Apr 25, 2018 9:58 am Post subject: Re: Sourcing DIY Led Parts Reply with quote

 If  you  want  a  PWM  dimmable  LED  driver,  you  will  have  to  go  for  Meanwell  drivers,  for  which  you  will  find  a  lot  of  electronic  shops  selling  in  SP  Road.  Just  check  out  shops  with  the  Meanwell  banners,  checkout  online  for  the  models  you  might  be  interested.
 And  about  the  LEDs,  A  cree  dealer  is  avilable  in  Bangalore,  but  the  cost  is  very  prohibitive.  next  best  source  would  be  Ali  Express  .
 And  my  suggestion  is,  dont  fall  into  this  nonsense  of  RED,  BLUE  And  other  color  LED.  its  not  proven  that  these  are  absolutely  needed.
 Just  go  fro  Cool  whites   of  any  LED,  it  has  worked  for  me  and  many  more  people  whom  I  know..
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ashwin1224
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Joined: May 20, 2011
Posts: 990
Location: Nagpur

Status: Offline
PostPosted: Fri Apr 27, 2018 12:58 pm Post subject: Re: Sourcing DIY Led Parts Reply with quote

 TL;DR:  Instead  of  going  for  a  complete  DIY  build,  look  at  mass  market  LED  Bulbs.  They  have  everything  you  need,  right  color,  right  optics,  right  price  and  sufficient  lumen  output.
 
 
 I've  had  tanks  with  almost  all  lighting  techs(except  MH).  And  I  would  go  with  others'  suggestions  that  you  dont  really  need  a  complicated  DIY  LED  build  for  a  small  planted  tank.  Ive  built  a  180W  dimmable  LED  unit  for  my  nano  reef  tank  and  it  was  only  justified  because  the  very  specific  wavelengths  zooanthelles  react  to,  since  in  nature  they  grow  at  quite  a  depth  of  sea  water  which  refracts  most  wavelengths  out.
 
 Plants  however  can  absorb  a  much  wider  temperature  of  light.  6500K  is  arguably  the  juggernaut  in  this  space.Yes,  sure  some  people  argue  temperature  is  not  correct  and  you  should  be  looking  at  the  wavelength.  Well,  6500k  has  everything,  dominant  being  the  440nm-460nm  blues  and  ~700nm  reds,  with  some  550nm  greens  in  their  as  well.  Blue  and  Red  light  are  all  that  plants  absorb,  which  6500k  has  a  lot  of  so  you  don't  really  need  to  supplement  more.
 
 There  are  commercial  lights  with  added  reds  and  blues  which  are  mostly  gimmicks  and  add  only  aesthetics  nothing  else.
 
 What  you  should  be  looking  for  in  your  lights  are  its  color  temperature  and  lumen  output.  CREEs  today  are  churning  180-200  lumens,  which  make  them  highly  efficient,  but  the  trade  off  is  the  chip  cost.  Instead,  LEDs  of  a  year  or  two  back  still  make  90-100lumen/W  and  have  gained  the  power  of  mass  production.  Look  at  the  Phillips  Stellar  range  of  LED  bulbs,  6500k,  100lumen/W,  no  heatsink/driver  needed,  available  from  4-20W  i.e.  400  to  2000  lumens,  and  readily  available  for  a  reasonable  price.
 
 The  drawback  is  they  do  not  go  with  new-age  aquarium  aesthetics  defined  by  the  ADA  or  Chihiro  units,  which  IMO  look  so  good  they  justify  sacrificing  your  first  born  to  buy.  The  other  drawback  is  that  I  dont  think  they  are  dimmable  too,  but  this  can  be  overcome  by  using  several  low  power  bulbs  and  keep  them  on  seperate  circuits.  
 
 Focus  on  getting  other  things  right,  its  better  to  have  less  light  than  more  light.  Not  all  plants  react  well  to  liquid  carbon,  not  all  plants  grow  at  the  same  rates,  too  much  nutrients  is  a  thing.  DIY  CO2  is  a  very  fickle  thing  in  itself,  you'll  be  facing  black  beard  algae  in  no  time  if  you're  not  extra  careful.  Also,  the  citric  acid+baking  soda  setup  is  a  million  times  better  than  yeast  and  sugar.  It  is  almost  as  good  a  source  as  liquid  CO2  without  the  drawbacks.
 
 Ps:  Sorry  for  the  long  post   Drinking
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