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Needle Wheel Modification

Discussion in 'CO2 Enrichment' started by scoupland, Oct 24, 2013.

  1. scoupland

    scoupland Lifetime Members
    Lifetime Member

    Sep 22, 2011
    Likes Received:
    Local Time:
    8:44 PM
    I posted this question on another thread but I think it may have gotten lost in the thread so I am reposting as a new thread.

    I have read through this thread ( and please help to see if I understand how I can applied Tom's modified needle wheel idea to my situation. I have an 80 gal planted tank with a wet/dry sump for filtration. My return pump is a Sicce Syncra 2.0 with an adjustable return rate up to 568gph max is in my sump. My understanding is that I would not modify the needle wheel of my return pump and feed CO2 into it, but instead I could put a small pump with a modified needle wheel near my return pump and feed CO2 into it. The output of this small pump would be near the intake of the return pump. The small pumps I have on my shelf are a RIO 90 (85gph), Sicce Micra Plus (adjustable to 158gph), or a Maxijet 1200 (295gph). Would any of those work or do I need something more powerful? Am I understanding this correctly? Also, where is the best place to put my pH probe given this setup--in the sump, inline on the rerun line, or in the tank?

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