This site is supported by the advertisements on it, please disable your AdBlocker so we can continue to provide you with the quality content you expect.
  1. We are after as many aquarium plant images that we can get, doing so will assist us in completing the aquarium plant database.

    https://barrreport.com/threads/aquatic-plant-images-wanted.14374/
    Dismiss Notice

Can the red in some plants be used as a NO3 Indicator?

Discussion in 'Advanced Strategies and Fertilization' started by ceg4048, Apr 2, 2005.

  1. ceg4048

    ceg4048 Lifetime Charter Member
    Lifetime Member

    Joined:
    Mar 21, 2005
    Messages:
    240
    Likes Received:
    0
    Local Time:
    5:29 AM
    Hello,
    Ever since implementing the EI procedures I've noted that some plants which normally have a red element to their color pattern such as the "Sunset Hygro" have suddenly lost this red component. A NO3 test typically confirms (as accuracy permits) higher NO3 levels than when I was not dosing per this procedure. If I refrain from dosing the KNO3 to allow the NO3 concentration to fall and if I maintain all other dosing per EI such as micros and KH2PO4, by the end of the week, I notice the red/pink returning to some of these plants.

    Naturally the all-red plants such as Alternanthera are not affected, only those which have a variagated red component. E. x Barthii, which at much lower NO3 levels sprouts new leaves having a deep red color changes at higher indicated NO3 levels such that the new leaves emerge a pale beige and the mature leaves loose all their red. Again, as the NO3 level drops the new leaves appear to regain some of the red.

    Is this color change a coincidence with some other factor or is there a relationship between the red/pink colors and NO3 levels. If so can this "behavior" be used as one of the reliable visual indicators of a falling or a "threshold" NO3 level?

    Cheers,
     
  2. GreenStuff

    GreenStuff Prolific Poster

    Joined:
    Feb 11, 2005
    Messages:
    62
    Likes Received:
    0
    Local Time:
    5:29 AM
    Re: Can the red in some plants be used as a NO3 Indicator?

    That's a good question. I have noticed the same thing in my tank since implementing EI, and since I can't trust my NO3 tests, it would be nice to judge it by something, .......other than my fish dieing. :eek: (Kidding.)
     
  3. Tom Barr

    Tom Barr Founder
    Staff Member Administrator

    Joined:
    Jan 23, 2005
    Messages:
    18,676
    Likes Received:
    631
    Local Time:
    5:29 AM
    Re: Can the red in some plants be used as a NO3 Indicator?

    No, you are correct.
    We fanatisized about making plants redder years ago, then we figured it out.

    Low but stable N will allow plants to maintain a red color, the problem is, bottoming out the NO3 wills tunt the plants at higher light.

    Be careful not to do that.

    Regards,
    Tom Barr
     
  4. Urkevitz

    Urkevitz Junior Poster

    Joined:
    Mar 29, 2005
    Messages:
    24
    Likes Received:
    0
    Local Time:
    5:29 AM
    Re: Can the red in some plants be used as a NO3 Indicator?

    Would cutting No3 additions in half be a good way to bring out reds?
     
Loading...

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice