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Chlorine problem

Discussion in 'Water Chemistry' started by TuvaM, Apr 23, 2017.

  1. TuvaM

    TuvaM Member

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    Hi guys.
    When I tested the water in my tank today I got positive results for chlorine, about 1,5 mg/l. I always let the water rest before waterchanges, and there was no chlorine in the water I use for the changes. I don't have any dechlorinators atm, what to do? I also tested my tapwater which has the same amount of chlorine.
  2. ButtNekkid

    ButtNekkid Active Member

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    What does your water supplier say? Do they use chlorine?
    Do your fishes show any weird symptoms? Why did you decide to test your tank in the first place?
    bbetta likes this.
  3. bbetta

    bbetta Member 5 Year Member

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    And also, what kind of tests did you use?
  4. TuvaM

    TuvaM Member

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    I think they use a little chlorine. But my test may be wrong. I use the JBL Pro Scan. The intetion was to measure kh og Gh. My fish seem fine, they are not acting any different than usual. So yeah, my test may be wrong.
  5. Mike Wise

    Mike Wise Moderator Staff Member 5 Year Member

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    If your water supply, like mine, uses chloramines instead of chlorine it will not dissipate just by aerating for a day. It needs a dechlorinator to break the chlorine/ammonia bond.