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Help with airation

Discussion in 'General Plant Topics' started by ccLansman, Jan 10, 2009.

  1. ccLansman

    ccLansman Guru Class Expert

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    Im trying to figure out why my drop checkers are never going back to blue. I turn on an air pump at lights off and it goes until the co2 turns back on yet my drop checkers never return to blue, they are ALWAYS green. Does this mean im not injecting enough oxygen? Should i inject the oxygen into my reactor at night? Is oxygen at night just as important as CO2 during the day for plants?

    Thanks
     
  2. That means drop checkers are useless. They are there just to amuse you.
     
  3. SuperColey1

    SuperColey1 Guru Class Expert

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    How old is the solution? If new then there may be a 'breach' in that I had one with a hairline crack in the glass and I didn't spot it for a long while. Mine seemed to stay at green and I assume it was the contaminants of other acids in the tank water rendering the 4dKH useless as a reference.

    Saying that I have my water rippling 24/7 so there is always a reasonable amount of O being brought in.

    Mine doesn't necessarily return to blue though. definately not the bright blue of when you fill it. It returns to a dark green/dark blue as it is reading the natural amount of CO2 that is coming through gaseous exchange.

    AC
     
  4. tedr108

    tedr108 Lifetime Charter Member
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    When my tank was fairly new, my drop checker used to get a scum layer in the opening after 2 or 3 days, which would stop gas exchange. Once that formed, my DC would also stay green permanently. I lessened this problem by lowering my drop checker deeper in the tank, and this problem also went away of its own as my tank aged.

    I believe that a weekly reagent change is normally recommended.

    If you have good circulation and surface movement, you surely have plenty of oxygen. And, with all of the extra effort you put into oxygenating your tank at night, I'll bet you have more than most.
     
  5. SuperColey1

    SuperColey1 Guru Class Expert

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    I only change mine every 3 weeks but it is fine to change it weekly. daily if wanted ;) I think the general consensus is 2-3 weeks and as I am quite lazy I go for the longer. lol

    I don't worry too much about my colour unless the bottle is coming to its end. I know it is set to where I want it and can easily check to see the bps hasn't changed.

    It does tend to stay at the right colour though and a murky blue pre CO2 on.

    AC
     
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