Nitrates are always 40ppm- why?

Discussion in 'Freshwater Beginners' started by The Fish Lady, Jul 19, 2015.

  1. The Fish LadyValued MemberMember

    What am I doing wrong? I always have nitrates running at 40 it seems. I have a 36 gal bow front with a Quietflow 55/75 filter and a sponge filter, set up since March. I do at least a 50-60% water change weekly and I vacuum the sand. How can I lower my nitrates!

    Sent from my iPhone using Fish Lore Aquarium Fish Forum
  2. CoradeeModeratorModerator Member

    Have you tested your tap water? that could be the source of the high nitrates
  3. The Fish LadyValued MemberMember

    No, didn't think of that. I'll give that a try

    Sent from my iPhone using Fish Lore Aquarium Fish Forum
  4. BDpupsWell Known MemberMember

    I live in the Midwest and there are always nitrates in the tap from field run off.
  5. JswinWell Known MemberMember

    I've heard of people growing house plants hydroponically in their HOB filters to reduce nitrates. Unfortunately I know nothing about this but it might be worth researching. Also floating aquatic plants are supposed to eat more nitrates
  6. BDpupsWell Known MemberMember

    Pothos work very well for this. There is a thread here of a members using different kinds of house plants to reduce nitrates.
  7. Et tuValued MemberMember

    Yes my tap water measures 10-20 ppm and I live in the mohave desert. I have to use a 50/50 tap/ro mix. Nitrates in tap water is pretty common.

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