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  1. #1

    Join Date
    Jun 2007
    Colorado Springs, CO

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    *kicks* :P - Drumachine09   RAK - DemonShark   For Your Help & Friendship! Thanks! :) - MeganL3985   Welcome to the SW club! - Drumachine09   To a fellow 20g + cube tank - A340   

    Default DIY CO2 Question

    0 Not allowed!
    I want to set up a DIY CO2 injection system, but I am worried that it would cause a crash in my pH. What precautions should I take when adding CO2?
    10 Gallon/ Quarantine
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  2. #2

    Join Date
    Apr 2007
    Worcester MA

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    0 Not allowed!
    Some people run an airstione at night to balance it out

    I don't and haven't had any problems
    Go ahead - try to count my Bumblebee Gobies!

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  3. #3

    Join Date
    Jan 2007

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    0 Not allowed!
    I don't do anything and I'm fine but then my substrate has limestone in it so maybe that has something to do with it.

  4. #4

    Join Date
    Jan 2007
    Connecticut, USA

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    thanks for good advice - hobbs   ROADTRIP! - Drumachine09   We'll need a case of these for the roadtrip, got the humvee waitin. lol - cocoa_pleco   NO plants = Sour grapes  LOL - hobbs   Wooden Spoon Protection! - Drumachine09   


    0 Not allowed!
    Quote Originally Posted by Bill M.
    I want to set up a DIY CO2 injection system, but I am worried that it would cause a crash in my pH. What precautions should I take when adding CO2?
    Changes in pH from CO2 only do not have any effect on fish whatsoever. Case in point, people with planted tanks regularly do 50-75% water changes (which drastically reduces CO2 levels), which will often swing a tank's pH up by 1.0 in a matter of minutes (or in my case, as I have a small tanks, in seconds). Noone has ever had any problems (me included). There are only two possible harms that can come from CO2 is overdose, one of which is asphixiation from extremely high levels of CO2, but it's extremely tough to do with DIY CO2 and only really occurs when a pressurized Co2 system has an end of tank dump, where the regulator basically burps off the last bit of CO2 extremely quickly. The other one is high CO2 levels/low surface agitation at night (when both plants and fish are using oxygen). Just aim for a pH drop of 1.0, which will indicate exactly 30ppm of CO2, the ideal. Or just get a drop checker for a few bucks on ebay. With a proper CO2 level, you don't have to worry about anything, though running an airstone at night (tied to a timer) can't hurt. It just wastes a bit of CO2.
    Last edited by Chrona; 07-28-2007 at 04:36 PM.

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