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Correct nutrient levels for 120Gal:

Discussion in 'CO2 Enrichment' started by creighton, Dec 8, 2007.

  1. creighton

    creighton Guru Class Expert

    Jun 18, 2007
    Likes Received:
    Local Time:
    11:08 PM
    Do these nutrient levles look okay?

    68g K2SO4 + 68g KNO3 + 4.54g K2PO4 / 1500ml of DI H2O

    300ml in 120 gallons should give me:

    N: 20 ppm
    P: 25 ppm
    K: 2 ppm

    50g CSM+B / 1000ml of DI H20

    70ml in 120 gallons should give me:

    Fe: .5 ppm

    M,W,F = Trace
    T,TR =NPK
    Sat= Rest Day
    Sun= 50% WC then NPK

    Dosing every night after lights off for that day.

    I looked over some of my previous calculations and I think I was adding 2 ppm of Fe!!! and not nearly enough Nitrate.

    Do these levels look okay? Did I make a mistake in the math? I used Chuck's calulcator for everything but the Phosphate.

    Tank currently has 3x96w 6700K PCF ( can run one more 96w) with 10 Hr. Photoperiod, 2xFluval 405's pointed at the plants, and Injected CO2 at approx. 4 bubbles/sec going through a "power reactor" from aquarium witch is located next to both intakes of the Fluval's, 10 Hr. areation at night with power head injecting air.

    Plants: Lots of Giant Hygro, Swords, Pygmy chain sword, java fern, stargrass ... heavily planted

    Fish: 10 Juvi. Discus, 10 Pygmy corries, 10 bronze corries, 3 skunk loaches, 1 Hores face loach, 3 otto cats

  2. Tex Gal

    Tex Gal Junior Poster

    Nov 14, 2007
    Likes Received:
    Local Time:
    11:08 PM
    This is a chart posted on the APC for EI dosing dry ferts.
    100 - 125 Gallon Aquarium
    +/- 1 1/2 tsp KN03 3x a week
    +/- ½ tsp KH2P04 3x a week
    +/- ½ tsp (30ml) Trace Elements 3x a week
    50% weekly water change

    EI target ranges
    CO2 range 25-30 ppm
    NO3 range 5-30 ppm
    K+ range 10-30 ppm
    PO4 range 1.0-2.0 ppm
    Fe 0.2-0.5ppm or higher
    GH range 3-5 degrees ~ 50ppm or higher
    KH range 3-5

    Hope this helps. :)

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