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Anyone feed OUTPUT of needlewheel to INPUT of reactor?

Discussion in 'General Plant Topics' started by growitnow, Jul 14, 2011.

  1. growitnow

    growitnow Lifetime Charter Member
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    Hi,

    I just switched from AM1000 reactor on my 90gal tank, to an external needle wheel pump. The pump is an Eheim 1262 (900gph) but with a needle wheel impeller. Since I didn't know what to expect, I lowered bubble rate before the switch, and have been slowly increasing bubble rate with the NW now installed.

    I have been upping and upping the CO2 with little change in drop checker (only blue-green by end of day), and have seen others make similar comment after switching from reactor to a needle wheel (need more CO2 with needle wheel to get same change in drop checker).

    So, I am wondering if there is any advantage (or disadvantage?) to re-installing the AM1000 reactor and feeding the output of the Needle Wheel pump, to the input of the reactor. I assume this would increase contact time but have no sense of whether there's value in doing that.

    thanks for any insight,
    growitnow
     
  2. chopsticks

    chopsticks Prolific Poster

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    As I understand, the CO2 from a needle wheel is not dissolved in the water but atomized so a drop checker is more unreliable with this method, it seems that plants do better with this method, though. You need to observe how plants react.

    I dont know if there may be advantages or disadvantages, but I think that if you add again the reactor after the needle wheel, the needle wheel will be useless, but this is just speculation on my part.

    Regards,

    Juan
     
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