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DIY co2 with thermostat

 
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aquariumer
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PostPosted: Fri Jun 22, 2012 6:31 pm Post subject: DIY co2 with thermostat Reply with quote

 The  only  problem  with  my  diy  co2  in  my  initial  days  of  hobby  was  temperature,  fall  in  temperature  effected  the  co2  generation.  Then  I  was  fed  up  with  diy  and  got  myself  a  pressurized  system  which  is  now  dosing  my  nano  tank.  Now  I  have  decided  to  setup  a  low  tech  planted   tank.so  I  decided  to  go  a  head  with  DIY  co2  generator  and  installed  a  heater  to  the  mixture  container  and  with  no  surprises  it  works  wonders.
 
 http://youtu.be/E3gEgmC2Y3g
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Bobby24
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PostPosted: Fri Jun 22, 2012 6:57 pm Post subject: Re: DIY co2 with thermostat Reply with quote

 Hi  Aquariumer,
 
 How  large  in  LBs  or  KGS  is  your  pressurized  CO2  cylinder  and  if  you  dont  mind  telling,  how  much  did  you  pay  for  it?
 
 Also  you  could  consider  using  a  CO2  reactor  as  opposed  to  a  diffuser,  or  running  it  through  your  pump  as  in  the  video,  I  see  it  is  not  dissolving  all  the  CO2  fully  as  your  pump  is  burping.   I  had  a  DIY  CO2  system  and  used  to  run  this  straight  into  the  intake  of  my  canister  filter,  I  got  100%  dissolved  CO2  but  that  was  only  a  temp  solution  and  there  was  not  enough  CO2  for  my  HC,  once  I  got  my  pressurized  system  and  ran  the  CO2  through  a  diffuser  however  I  did  not  like  the  spray  of  fine  bubbles  floating  through  the  tank,  so  I  got  myself  a  reactor  and  it  dissolves  the  CO2  100%  and  it  cost  me  less  than  my  diffuser.
 
 By  about  noon  time  my  tank  is  pearling  and  bubbling  almost  like  a  glass  of  Champagne,  I  have  seen  a  drastic  difference  in  the  plants.   I  understand  you  said  that  this  is  a  low  tech  tank,  but  still  if  you  could  make  100%  use  of  the  CO2  then  that  would  be  better.
 
 
 Bobby
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aquariumer
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PostPosted: Fri Jun 22, 2012 7:01 pm Post subject: Re: DIY co2 with thermostat Reply with quote

                                                   
Bobby24  wrote  (View  Post):                
Hi  Aquariumer,
 
 How  large  in  LBs  or  KGS  is  your  pressurized  CO2  cylinder  and  if  you  dont  mind  telling,  how  much  did  you  pay  for  it?
 
 Also  you  could  consider  using  a  CO2  reactor  as  opposed  to  a  diffuser,  or  running  it  through  your  pump  as  in  the  video,  I  see  it  is  not  dissolving  all  the  CO2  fully  as  your  pump  is  burping.   I  had  a  DIY  CO2  system  and  used  to  run  this  straight  into  the  intake  of  my  canister  filter,  I  got  100%  dissolved  CO2  but  that  was  only  a  temp  solution  and  there  was  not  enough  CO2  for  my  HC,  once  I  got  my  pressurized  system  and  ran  the  CO2  through  a  diffuser  however  I  did  not  like  the  spray  of  fine  bubbles  floating  through  the  tank,  so  I  got  myself  a  reactor  and  it  dissolves  the  CO2  100%  and  it  cost  me  less  than  my  diffuser.
 
 By  about  noon  time  my  tank  is  pearling  and  bubbling  almost  like  a  glass  of  Champagne,  I  have  seen  a  drastic  difference  in  the  plants.   I  understand  you  said  that  this  is  a  low  tech  tank,  but  still  if  you  could  make  100%  use  of  the  CO2  then  that  would  be  better.
 
 
 Bobby                

 
 do  you  have  any  suggestion  to  dissolve  100%  co2  with  DIY  mixture?
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Bobby24
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PostPosted: Fri Jun 22, 2012 7:17 pm Post subject: Re: DIY co2 with thermostat Reply with quote

 You  could  use  the  same  reactor,  its  called  and  Ista  CO2  Mixer,  it  has  two  impellers  that  move  at  different  speeds,  and  chop  the  CO2  bubbles  they  disolve  completely.
 
 You  connect  the  output  from  your  pump  (in  my  case  my  cannister  filter)  into  the  intake  of  the  reactor  and  the  out  put  from  the  reactor  into  the  tank,  the  water  from  your  pump  out/reactor  in  spins  the  impellers.   The  CO2  from  your  DIY  or  your  Pressurized  system  goes  into  the  reactor,  you  connect  a  check  valve  between  the  reactor  and  your  CO2  source,  I  have  put  a  mini  bubble  counter  between  check  valve  and  the  reactor.
 
 There  are  DIY  reactor  instruction  on  YouTube  and  google,  if  you  cannot  get  your  hands  on  one  then  perhaps  you  cam  build  one  yourself,  it  takes  a  bit  of  searching  as  when  you  type  DIY  CO2  reactor,  you  come  up  with  DIY  CO2  systems.   I  will  post  a  picture  of  my  reactor.
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Bobby24
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PostPosted: Fri Jun 22, 2012 7:39 pm Post subject: Re: DIY co2 with thermostat Reply with quote

 Reactor:
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aquariumer
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PostPosted: Fri Jun 22, 2012 8:35 pm Post subject: Re: DIY co2 with thermostat Reply with quote

 do  you  think  the  pressure  in  diy  can  enough  to  penetrate  the  reactor
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Bobby24
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PostPosted: Fri Jun 22, 2012 8:48 pm Post subject: Re: DIY co2 with thermostat Reply with quote

 With  this  reactor  should  not  be  a  problem  at  all,  there  is  no  pressure  on  the  CO2  intake,  infact  with  the  water  flowing  over  it,  it  should  assist  the  flow  of  CO2  just  like  a  venturi  system  works.
 
 I  have  stuck  the  Bubble  Counter  on  the  reactor  in  Pic  1,  using  a  vaccum  suction  cup  the  red  thing  underneath  is  just  a  plastic  bottle  cap  so  that  it  straightens  the  counter  and  I  can  see  the  bubbles.
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aquariumer
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PostPosted: Sat Jun 23, 2012 1:23 am Post subject: Re: DIY co2 with thermostat Reply with quote

 a  reactor  takes  more  pressure  than  a  diffuser  because  of  the  turbulence  pressure  from  power  head  further  I  dont  want  24/7  gas  diffusion  and  If  I  stop  power  head  at  light  offs  than  my  reactor  will  be  full  of  gas  giving  starting  problem  in  the  morning  again.
 you  dont  need  to  or  rather  cannot  dissolve  co2  100%  of  you  supply  refer  to  "saturation  level  of  gases  in  solvent-water"
 with  this  diffusing  method  I  can  even  grow  a  high  demanding  high  lights  plant.
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Bobby24
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PostPosted: Sat Jun 23, 2012 12:18 pm Post subject: Re: DIY co2 with thermostat Reply with quote

 I  don’t  think  the  turbulence  pressure  from  the  power-head  would  be  causing  any  pressure  for  the  same  reason  the  water  does  not  spout  out  through  a  venturi  intake,  unless  your  run  out  of  gas  and  get  backwash  or  if  there  is  a  blockage  on  the  outlet  side.  Just  out  of  curiosity,  how  do  you  stop  your  current  diffusion  at  night?   Mine  is  a  pressurized  system,  so  I  have  a  solenoid,  I  would  not  want  to  inject  CO2  24/7  as  well,  by  evening  the  colour  of  the  CO2  indicator  is  yellow.   With  my  DIY  I  had  kept  it  going  24/7.
 
 Well  this  reactor  may  not  dissolve  it  100%,  like  you  said  it  is  impossible,  but  to  the  naked  eye  the  water  comes  out  clear  with  no  tiny  CO2  bubbles  and  it  is  very  pleasing  aesthetically  the  only  visible  bubbles  are  the  O2  bubbles  from  the  plants  because  the  tank  is  O2  saturated  too  I  have  adjusted  the  outflow  from  the  pump  to  cause  a  mild  ripple  and  I  also  have  a  surface  skimmer,  also  I  can  see  a  visible  positive  difference  in  the  plants  now  compared  to  when  I  sprayed  them  with  CO2  through  the  diffuser  I  had,  then  again  I  am  not  expert  on  this  subject  spraying  vs  dissolving  via  a  reactor.   But  whatever  works  for  you  mate,  different  strokes  for  different  folks   Smile  and  situations     Thumb Up  post  us  some  pictures  of  the  tank.
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