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http://indianaquariumhobbyist.com/community/ :: View topic - Acrylic sheets between light and plants ?
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Acrylic sheets between light and plants ?

 
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Preeths
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PostPosted: Fri Aug 22, 2008 7:20 pm Post subject: Acrylic sheets between light and plants ? Reply with quote

 I  have  got  3mm  acrylic  sheets.  I  am  planning  a  planted  tank  very  soon.  I  will  place  the  transparent  sheets  on  the  tank  (  to  prevent  fish  from  jumping).  I  will  make  a  few  small  holes  for  air  circulation.  I  wanted  to  know  if  this  would  have  adverse  effects  on  the  lighting.  It  is  absolutely  clear.  But  will  having  acrylic  sheet  in  between  mean  that  I  will  need  more  watts  per  gallon?
 
 Tank:  24L  X  12W  X  15H  inches
 Lighting:  CFL  -  28Watts
 DIY  hood  with  aluminum  foil  for  better  reflection.
 
 Plants:
 
 Ricca  and  Dwarf  hair  grass  only(  may  add  carpet  plants  later)
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Seetharam
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PostPosted: Fri Aug 22, 2008 7:42 pm Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 Preetam
 
 Dwarf  hair  Grass  is  a  foreground  carpet  plant   Smile
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vkv
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PostPosted: Fri Aug 22, 2008 8:41 pm Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 You  will  need  to  make  a  stiff  frame  for  the  acrylic.  at  3mm  it  will  warp  in  no  time  and  your  fish  will  find  large  gaps  to  commit  suicide  through.  Smile
 
 Shouldn't  make  any  difference  to  your  lighting,  IMO.
 
 Regards,
 Venkat
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vkv
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PostPosted: Fri Aug 22, 2008 8:42 pm Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 On  second  thought,  water  will  condense  on  the  underside  and  that  may  cause  a  little  problem...
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Preeths
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PostPosted: Fri Aug 22, 2008 9:16 pm Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 I  have  stuck  small  acrylic  strips  on  all  sides  so  it  fits  snugly  and  dosent  bow  much.  a  few  millimeters  gap  is  no  problem  i  dont  think  water  condensation  will  be  a  problem  as  the  acrylic  will  be  warm  due  to  close  proximity  to  the  lighting.  the  main  reason  i  am  using  acrylic  is  because  a  fish  jumped  into  the  CFL  lighting  and  half  its  body  was  fried  to  a  crisp  and  blackened.  the  fish  was  still  alive  when  i  got  home  from  work.  i  just  put  it  out  of  its  misery.  want  to  prevent  such  accidents  in  the  future...
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PostPosted: Fri Aug 22, 2008 9:47 pm Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 Have  seen  such  acrylic  cover  on  a  loach  tank  (sparsely  planted  with  little  light)  on  youtube.  Will  post  the  link  if  I  find  it  again.  But  not  sure  how  it  works  for  a  fully  planted  tank.
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PostPosted: Sat Aug 23, 2008 9:03 am Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 Hey  Preetham,
 
 As  for  the  tank  cover  suggest  you  go  in  for  glass  a  much  better  option  than  acrylic.
 
 Acrylic  or  glass  both  will  tend  to  have  scaling  deposits  due  to  salts  in  the  water  over  a  period  of  time  (happens  as  a  result  of  condensation)  glass  can  be  cleaned  off  very  easily  but  with  acrylic  you  tend  to  scratch  the  material  more  often  and  hence  over  a  period  of  time  the  CLEAR  acrylic  will  become  translucent  and  then  opaque.
 
 3mm  acrylic  over  a  2sqft  area  will  also  tend  to  sag  over  a  period  of  time  ,  instead  you  can  either  go  for  2  pcs  of  machine  polished  glass  or  better  still  a  single  piece  of  glass  which  can  be  fit  into  the  tank  with  acrylic  clamps  on  the  side.
 
 Regards
 Adip
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Preeths
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PostPosted: Sat Aug 23, 2008 9:59 am Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 The  problem  with  glass  is  that  it  breaks  easily,  i  get  clumsy  some  times  so  i  am  going  with  acrylic.  i  wanted  to  know  if  i  needed  to  increase  wattage  due  to  the  use  of  acrylic.  I  have  already  got  the  acrylic  sheets.  
 
 Yes  there  is  saggng  but  it  nots  that  big  a  problem.
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garothmaan
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PostPosted: Sat Aug 23, 2008 11:11 am Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 A  flat  top  with  holes,  directly  over  the  tank  is  not  a  good  idea  (sorry),  best  would  be  a  proper  conventional  hood  made  in  acrylic,  lights  below  it  is  ok....
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Shankar
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PostPosted: Sat Aug 23, 2008 12:02 pm Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 Preeths,  may  I  know  what  Jumping  fish  are  you  planning  for  your  planted  tank?
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Perikaruppan
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PostPosted: Sat Aug 23, 2008 1:02 pm Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 the  simplest  solution  is  not  to  have  any  fish  that  shall  jump!!!
 
 glass  can  break  due  to  the  heat  of  the  lighting,  if  it  is  high  lighting..  had  that  experience  before...  so  u  need  to  get  tempered  glass..  and  in  that  case  we  need  to  look  at  the  costing  of  tempered  glass.
 
 day  to  day  maintenance  is  hell  when  u  need  to  remove  the  glass/acrylic  to  clean,  feed  etc.,  
 
 better  get  a  hood  designed  to  cover  all  four  sides  like  a  box...  so  even  if  the  fish  jump  they  will  jump  back  into  the  water  only,  that  is  if  you  dont  have  an  side  support  strips  on  your  tank.
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Preeths
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PostPosted: Sat Aug 23, 2008 2:16 pm Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 I  have  a  proper  hood  with  light,  the  problem  is  one  of  the  fish  jumped  onto  the  light  and  burnt  itself.  I  will  be  placing  the  acrylic  sheet  on  the  tank  or  paste  it  inside  the  hood  under  the  bulb.
 
 
 Well  at  some  point  in  time  all  fish  try  and  jump!  and  it  was  a  fancy  guppy  that  got  burnt!
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Supra
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PostPosted: Sat Aug 23, 2008 2:56 pm Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 Hi,
 
 Preeths,  cant  you  use  agricultural  netting  on  top  of  the  tank  ???
 
 I  think  it  should  solve  the  problem  of  jumping  fish  &  light  penetration...
 
 Rgds
 Prabhu
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Preeths
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PostPosted: Sat Aug 23, 2008 6:05 pm Post subject: Re: Acrylic sheets between light and plants ? Reply with quote

 I  used  netting  but  that  will  reduce  the  light  by  about  50%.  hence  the  acrylic.
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