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http://indianaquariumhobbyist.com/community/ :: View topic - 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted tank
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40 Watts, 12000 Kelvin, 2320 Lumen lights for planted tank

 
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DJ_Rocky
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PostPosted: Thu Sep 06, 2007 8:55 pm Post subject: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted tank Reply with quote

 Hi  Guys,
 
 Is  40  watts  12000  Kelvin,  2320  lumen  tube  light  suitable  for  heavily  planted  tank.
 
 One  of  my  client  wants  to  have  a  planted  tank  of  48L  x  18W  x  20H  inch  size.  So  is  this  light  suitable  for  this  tank.  How  many  lights  I  have  to  use  on  that  tank?
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DJ_Rocky
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PostPosted: Fri Sep 07, 2007 5:01 pm Post subject: Re: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted ta Reply with quote

 No  replies!!!  Sad
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beta
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PostPosted: Fri Sep 07, 2007 5:03 pm Post subject: Re: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted ta Reply with quote

 I  dont  think  you  need  anything  more  than  8000K
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rohansd
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PostPosted: Fri Sep 07, 2007 5:11 pm Post subject: Re: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted ta Reply with quote

                                                   
beta  wrote  (View  Post):                
I  dont  think  you  need  anything  more  than  8000K                

 Agree  on  that.  It  is  also   dependant  on  what  kind  of  plants  do  you  have  in  there.
 For  a  tank  of  that  size  ,  considering  2.5wpg,  Please  go  for  about  175  Watts  of  light.
 Thats  an  approx  figure.
 Just  to  give  you  an  idea.
 
 I  have  36W  X4  6500K  lights  on  my  tank  (48LX18WX18H)  .
 But  I  would  love  to  change  it  to  following.
 
 36W  1NO  4000K  front
 36W  X  2  6500K  mid
 36W  X  1  800K  back
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DJ_Rocky
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PostPosted: Fri Sep 07, 2007 5:25 pm Post subject: Re: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted ta Reply with quote

 Whats  the  lumen  rating.  Lots  of  people  asked  me  about  Lumen.  They  said  that  they  need  more  lumen  capacity  lights.
 
 I  have  seen  OSRAM  tubes  comes  with  8000  Kelvin  with  3000  Lumen.
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DJ_Rocky
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PostPosted: Fri Sep 07, 2007 5:26 pm Post subject: Re: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted ta Reply with quote

 &  suppose  I  am  using  the  same  12000  k  lights  on  the  same  tank,  What  will  be  its  effect?
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harshal
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PostPosted: Wed Sep 19, 2007 11:50 am Post subject: Re: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted ta Reply with quote

 Hi  DJ  Rocky
 
      Sorry  for  the  late  reply  hopfully  this  info  will  still  help  you.
 
 
                                                 
Quote:                
Whats  the  lumen  rating.  Lots  of  people  asked  me  about  Lumen.  They  said  that  they  need  more  lumen  capacity  lights.  
                 

 
   Lumens  are  a  measure  of  light  to  the  naked  eye.  Apart  from  the  visual  effect  the  lumens  of  the  lamp  are  not  the  ONLY  critical  figure  for  lights  in  the  tank.  What  counts  along  with  it  is  the  kelvin  rating,  CRI  of  the  lamp.
    This  brings  me  to  the  next  question  12000k  lamps  for  planted  tanks  I  would  recomend  you  keep  the  range  in  4000k  -  8000k.  12000k  lamps  will  be  ineffective  as  compared  to  lamnps  in  the  above  mentioned  range.
 
   Placement  of  the  lamp  should  be  in  this  order  from  the  front  of  the  tank  to  the  back  8000k  -  6500k-  4000k  -  6500k  assuming  you  are  going  for  a  4  lamp  setup.
 
 
 
   
                                                 
Quote:                
&  suppose  I  am  using  the  same  12000  k  lights  on  the  same  tank,  What  will  be  its  effect?                

 
   The  effects  of  this  kelvin  range  firstly  is  the  blue  tinge  it  will  create  in  the  tank  it  will  not  be  visually  appealing  in  a  planted  tank  setup.  The  usable  light  by  the  plants  are  in  very  low  ratios  in  a  12000k  lamp.  Hence  making  it  far  less  effective  than  a  8000k  lamp.
 
 Hope  this  ans  all  your  questions.
 
 Regards
   Harshal
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Chinoy
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PostPosted: Thu Jun 04, 2009 1:38 am Post subject: Re: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted ta Reply with quote

 2.5  what/gal  
 so  for  a  130  gal  I  would  need  325  watts  of  lighting  or  9  36  watt  tube  lights  ?
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mandragoran
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PostPosted: Thu Jun 04, 2009 8:17 am Post subject: Re: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted ta Reply with quote

 Ron:  Yes.  For  a  planted  tank.  On  larger  tanks,  you  can  even  get  away  with  less  wpg.  If  you  want  2.5  wpg,  you  can  even  go  for  6  T5HO  tubes  (54  watts  each).
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Madan
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PostPosted: Thu Jun 04, 2009 9:01 am Post subject: Re: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted ta Reply with quote

 Ron  you  want  to  grow  plants  you  aim  for  3-4  wpg  and  CO2  injection  for  tanks  upto  3  x  1.5  x  1.5.
 Larger  tanks  you  can  make  do  with  the  lower  end  of  the  scale.  My  5x2.25  x  2  feet  tank  has  3  x  150  watt  MH  +  4  x  36  watt  T8.
 That's  594  watts  or  nearly  4  watts  per  gallon.  On  this  large  a  tank  it's  very  high  light.
 
 My  other  tank  2.25  x  1.5  x  1.5  has  1  x  70  watt  MH  +  2  x  24  watt  T5HO.  That's  again  4+  watts  per  gallon.
 
 It  all  depends  on  what  you  want  to  grow  and  how  fast  you  want  to  grow  them,  and  how  good  you  can  handle  the  setup.
 
 For  your  fish  only  Cichlid  setups,  I  would  not  exceed  2  x  36  watt  T8  for  a  4  x  1.5  x  1.5  tank.  More  light  is  lots  of  trouble  with  algae  in  the  absence  of  Plants  and  CO2.  MH  in  Cichlid  tank  -  hmmmm........  cry  within  a  month's  time.  BTW  Plants  and  most  Cichlids  don't  go  together.
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nytyn
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PostPosted: Thu Jun 04, 2009 9:21 am Post subject: Re: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted ta Reply with quote

 @DJ_Rocky,
 
 You  could  use  ADA  lighting.  8000K  is  the  best  for  plant  growth.
 
 If  you  want  to  have  varied  plants,  ranging  from  reds  to  greens,  you  could  use  a  mix  of  4000K,  6500K  and  8000K  bulbs.
 
 2  of  each  at  4  feet  length  will  give  you  a  total  of  6X36=216Watts.
 
 Read  up  extensively  on  the  internet  to  find  out  why  and  what  kelvin  you  would  need  for  plants  to  grow  well.
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PostPosted: Thu Jun 04, 2009 10:55 am Post subject: Re: 40 Watts, 12000 Kelvin, 2320 Lumen lights for planted ta Reply with quote

 This  is  an  old  2007  thread  dug  up  now  nytyn.  I'd  have  locked  it  but  then  it  was  replied  to  by  Ashwin,  so  let  it  go.
 Rocky  has  moved  on  I  think.
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