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http://indianaquariumhobbyist.com/community/ :: View topic - DIY Overflow Using Only PVC Pipe
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DIY Overflow Using Only PVC Pipe

 
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Joey
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PostPosted: Mon Feb 06, 2012 5:22 pm Post subject: DIY Overflow Using Only PVC Pipe Reply with quote

 Guys,
   I  have  made  an  overflow  using  PVC.  The  design  is  based  on  the  following  link.  http://www.aquariumlife.net/projects/diy-overflow/120.asp
   The  rating  of  the  submersible  pump  used  is  950  l/h.  The  issue  that  I  have  is  with  the  water  outflow  rate  -  its  higher  compared  to  the  inflow.  Due  to  this  the  submersible  pump  runs  out  of  water.  So  any  suggetions  ??
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abhi_123
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PostPosted: Mon Feb 06, 2012 5:46 pm Post subject: Re: DIY Overflow Using Only PVC Pipe Reply with quote

 What  is  the  size  of  your  sump  &  wats  the  flow  rate  of  your  inflow  pump?
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PostPosted: Mon Feb 06, 2012 6:20 pm Post subject: Re: DIY Overflow Using Only PVC Pipe Reply with quote

 actually  I  built  an  DIY  external  canister  filter  (  similar  to  one  built  by  hamza  )  -  but  was  unable  to  create  the  siphon.  So  I  built  this  overflow  using  pvc   Smile  .  This  solved  siphon  problem.  Now  the  submersible  pump  is  in  the  DIY  canister  filter.  The  pump  is  rated  950l\h.  The  inflow  is  not  keeping  up  with  the  pump  outflow.  Due  to  this  the  pump  is  not  fully  submerged  in  water  inside  canister  filter.
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abhi_123
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PostPosted: Mon Feb 06, 2012 7:07 pm Post subject: Re: DIY Overflow Using Only PVC Pipe Reply with quote

 IMO  you  need  only  one  pump  instead  of  two  make  sure  your  filter  as  well  as  your  overflow  &  inflow  system  is  always  filled  with  water  for  that  you  have  to  calculate  the  flow  rate  of  the  pipe  you  are  using.
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Joey
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PostPosted: Mon Feb 06, 2012 8:16 pm Post subject: Re: DIY Overflow Using Only PVC Pipe Reply with quote

 I  not  sure  if  you  have  got  the  problem  correct,  I  have  only  one  sub  pump  and  its  inside  the  canister  filter.  The  pvc  overflow  is  built  by  using  3/4  inch  pipe  ->  this  is  supposed  to  give  water  flow  rate  of  330  gph  or  1250  lph  and  the  pump  outflow  rate  is  250  gph  or  950lph.   So  theoretically  inflow  is  appx  80  gallon  higher  than  the  outflow  yet  I'm  having  issues.  So  just  want  to  know  how  to  fix  this.
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abhi_123
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PostPosted: Mon Feb 06, 2012 8:23 pm Post subject: Re: DIY Overflow Using Only PVC Pipe Reply with quote

 Which  make  pump  are  you  using  ?  looks  like  their  is  some  issue  with  your  overflow  can  u  please  post  a  pic?
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abhi_123
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PostPosted: Mon Feb 06, 2012 8:36 pm Post subject: Re: DIY Overflow Using Only PVC Pipe Reply with quote

 wats  the  i.d.  of  inflow  pipe?  Inflow  &  Outflow  pipe  should  be  of  different  sizes  as  per  hydraulic  transmission  rule.
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Joey
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PostPosted: Mon Feb 06, 2012 9:14 pm Post subject: Re: DIY Overflow Using Only PVC Pipe Reply with quote

 well  here  is  the  link  containing  pics  -  https://picasaweb.google.com/115725310089390590961/DIYPVCOVERFLOW#
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abhi_123
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PostPosted: Mon Feb 06, 2012 9:32 pm Post subject: Re: DIY Overflow Using Only PVC Pipe Reply with quote

 Please  answer  the  following  question
 
 1.Is  pipe  on  left  is  overflow  from  tank  if  yes  then  avoid  the  number  of  bends.
 
 2.  where  the  filter  is  placed?below  or  above  the  tank.
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