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. Dismiss Notice
  2. 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

Redfield ratio

Discussion in 'CO2 Enrichment' started by jtparsons, Jan 22, 2009.

  1. jtparsons

    jtparsons Prolific Poster

    Joined:
    Jan 18, 2009
    Messages:
    41
    Likes Received:
    0
    Local Time:
    11:52 AM
    Free of algae with Redfield Ratio | Aquariumpagina's van Charles Buddendorf

    Here's the link I was talking about in my noobie post. Redfield's experiences with algea and the ratio between nitrate and phosphate levels. Looks like with the EI method you could be anywhere from 1/5 thru 1/10. Redfields #'s are a little different. Think there's anything to this info?

    Anyways my tank is no longer cheap DIY:) . Purchased c02 tank, cellaniod, good needle valve, bubble counter, ADA drop checker(I was mesmerized into credit card submission by the pretty blown glass), Koralia power head, glass diffuser$$$$$$$$$$$$:eek:

    EI questions.
    1. Is all the Potassium comming from the KN03? Do I need to add more K.
    2. Durring the weekly water change do you dose back the N03 and P04 for the volume of water being changed 50% or full dose?
    3. How does 8GH and 4KH sound? I want to do the 4 to 1 ratio EI describes but that makes my Gh really high or my Kh really low?

    Thats all and thanks again. You should all be ashamed of yourself for bankrupting young aquarists around the world with your "high tech" advice. I will be posting reciepts for riembursment. J/K:D
     
  2. tedr108

    tedr108 Lifetime Charter Member
    Lifetime Member

    Joined:
    Nov 21, 2007
    Messages:
    514
    Likes Received:
    0
    Local Time:
    11:52 AM
    Re: your EI questions...

    1. You also get potassium from KH2PO4 (potassium phosphate).

    2. EI is flexible on dosing. However, if you read up on the EI threads in the Articles forum, the guidelines are to dose the macro nutrients 4 times per week and micro nutrients 3 times per week. I usually did my macro dose on the day of the water change. In other words, I didn't up my dosing on water change day.

    3. 8GH and 4KH water hardnesses sound fine, no need to mess with it. I'm not sure what ratio you are talking about, unless it is the 4 to 1 ratio of KNO3 to KH2PO4, which has nothing to do with water hardness.

    Hope this helps.
     
  3. jtparsons

    jtparsons Prolific Poster

    Joined:
    Jan 18, 2009
    Messages:
    41
    Likes Received:
    0
    Local Time:
    11:52 AM
    This qoute from "The estimative Index of dosing, or no need for test kits.
    I guess my question makes more sense this way. Are these parmeters correct and okay?
    Tap water is 1DGH and 1DKH
    If I dose 4DGH/DKH worth of Calcium I will have 5DGH/5DKH
    Then I could dose 1DGH worth of Magnesium 6DGH/5DKH

    I understand the dosing schedule this way. Every other day macro's. Traces on the off days. What I dont understand is when I do the weekly water change "reset" and redose the macros during the water change do I use a full dose for a 15gal aqaurium or 7.5 gallons for the volume of the water change.

    Thanks -Jon
     
  4. neil1973

    neil1973 Prolific Poster

    Joined:
    Dec 17, 2005
    Messages:
    58
    Likes Received:
    0
    Local Time:
    11:52 AM
     
  5. Tom Barr

    Tom Barr Founder
    Staff Member Administrator

    Joined:
    Jan 23, 2005
    Messages:
    18,676
    Likes Received:
    641
    Local Time:
    11:52 AM
     
  6. tedr108

    tedr108 Lifetime Charter Member
    Lifetime Member

    Joined:
    Nov 21, 2007
    Messages:
    514
    Likes Received:
    0
    Local Time:
    11:52 AM
    Jon,

    From what you are writing, I feel like you are confusing macros with GH builders. As far as EI macro nutrients (KH2PO4 & KNO3 normally), you do not typically change the dose on a water change day. Now, if you are talking about raising your GH by whatever method you choose ("resetting" the water), then, yes, you would only use enough GH builder to raise the GH of the water being replaced (7.5G in your case).
     
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