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Results 1 to 10 of 16

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  1. #1

    Default API Master Test Kits

    0 Not allowed!
    Query, have any of you had any problems with these test kits? Following the instructions to the letter, I constantly show 5+ ppm of nitrites, even after a 50 % water-change. I'm beginning to wonder about this.

  2. #2


    0 Not allowed!
    Have you tested your tap water?

  3. Default

    0 Not allowed!
    Yeah, test your tap water. I always recommend that so you know what you are dealing with before the water goes into the tank.

  4. #4


    0 Not allowed!
    Ph-7.5, Amm-0 ppm, Nitrites-0 ppm, Nitrates-.5 ppm. My tap water.
    Last edited by Dave Waits; 11-16-2012 at 10:50 PM.

  5. #5


    0 Not allowed!
    Well that should show that your test kit works if you get a different reading from the tap. Do another 50% water change and immediately test again?

  6. #6


    0 Not allowed!
    A 50% water change will not make a big change if you really have 8 ppm nitrites and they now drop to 4 ppm - both could, on a kit, read about 5 ppm since the eye is not great at comparing colors since light type and intensity matters.

    Do a real water change - 90%+ because nitrites should be well under 0.5 ppm or lower. That is a better test. I hope this isn't an aquarium with fish ... .
    Knowledge is fun(damental)

    A 75 gal with eight Discus, fake plants, and a lot of wood also with sand substrate. Clean up crew is down to just two Sterba's Corys. Filters: continuous new water flow; canister w/UV, in-tank algae scrubber!! Finally, junked the nitrate removal unit from hell.

    For Fishless cycling:

  7. Default

    0 Not allowed!
    what everyone else said

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