CO2 timing?

Discussion in 'Carbon Dioxide (CO2)' started by JohnC, 20 Jul 2009.

  1. JohnC

    JohnC Member

    Joined:
    14 Nov 2008
    Messages:
    1,045
    Location:
    On a mountain in the Highlands of Scotland
    Hi,

    What is considered best timing for those of us who switch our CO2 off at night?

    2 hours after lights on 2 hours after lights off?
    1 hour?
    same duration as lights?

    Thanks,
    John
     
  2. Superman

    Superman Member

    Joined:
    29 Jan 2008
    Messages:
    1,804
    Location:
    Cheltenham
    I put mine on 1 hour before lights on and 1 hour before lights off.
    Having the co2 on after lights is a waste.
    Some people have it switched off much earlier than 1 hour before lights off.
     
  3. aaronnorth

    aaronnorth Member

    Joined:
    19 Feb 2008
    Messages:
    3,955
    Location:
    worksop, nottinghamshire
    i have mine 2hrs before lights on, and 3hrs before lights off. Plants strat to wind down towards the end of the photperiod, and what CO2 is left in the water will be plenty. It doesnt gas off, or get used that quickly which is why i turn mine off so early.
     
  4. Dolly Sprint 16v

    Dolly Sprint 16v Member

    Joined:
    26 Oct 2008
    Messages:
    1,623
    Location:
    Cheshire
    john

    Mine Co2 switches on 2 hrs prior to lights coming on and goes off 1 hrs prior to lights going off.

    Paul.
     
  5. JohnC

    JohnC Member

    Joined:
    14 Nov 2008
    Messages:
    1,045
    Location:
    On a mountain in the Highlands of Scotland
    are you all on 8 hour photo periods?
     

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