Tannins messing with test results?

  1. Flowingfins

    Flowingfins Fishlore VIP Member

    I've been thinking about how a lot of my tanks have tannins, either from IAL or driftwood. I have the API test kit, and since you read the results with the colors, wouldn't the colored water alter it? Thoughts?
    Sorry if this is in the wrong place mods, I couldn't find a test kit spot.
  2. DoubleDutch

    DoubleDutch Fishlore Legend Member

    Yes, that's possible.
    JBL uses two testtubes at the sametime (one without adding anything) and a double chart (will take a pic later) so you can see what color you're starting with.
    Rereading I am hoping this makes sense (Dutch-English) to you.