Cal Aqua Double Drop Checker

Discussion in 'Carbon Dioxide (CO2)' started by alexandre, 7 Jun 2008.

  1. alexandre

    alexandre Member

    Joined:
    18 Feb 2008
    Messages:
    69
    Location:
    Frankfurt
    http://www.aquaessentials.co.uk/index.php?main_page=product_info&products_id=1990

    Any body tried one?
    I like the idea, because the color of the drop checker can change quite a bit, thickness of the glass, different spectrum etc... Mine never look the same when I take it out the water. But that way it sound good to me, it make sense on the paper. But does it really work? I am tempted to order one...
     
  2. Wolfenrook

    Wolfenrook Member

    Joined:
    30 Apr 2008
    Messages:
    336
    Location:
    West Midlands UK

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