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Dose For High Fish Load

Discussion in 'Advanced Strategies and Fertilization' started by imatrout, Aug 7, 2005.

  1. imatrout

    imatrout Prolific Poster

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    I can't figure this out, but even after my weekly water change, my Nitrate measurements are about 15 - 20 ppm BEFORE I dose EI. I have a 150 gal tank that is fairly heavily planted and 3.2 WPG for PC lights. I never seen to uptake Nitrate OR the fish are adding as much as the plants are consuming. I have about 55 fish in this tank. I do not over feed them. They are mostly African Cichlids (Tanganyikans) and 10 fat SAEs.

    I have been a little concerned that with Nitrates consistentlt greater than 25 ppm, I'm asking for trouble so here's the question.

    How much do you think I should dose and of what to get the required P and K without dosing KNO3 for N? I have a bottle of Flourish Potassium I could use for that, but what do you think in general. My typical reset dose using EI is:

    1.5 tsp KNO3
    1/4 tsp K2HPO4
    1 tsp K2SO4

    Any ideas?

    Thanks,

    Mike
     
  2. Ian H

    Ian H Guru Class Expert

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    Re: Dose For High Fish Load

    I'm sure Tom will correct me if I'm wrong here but I see that EI is a reasonably safe formula for people not wanting to do frequent testing. As you obviously test for nitrates then I would take the figures into account when you dose ferts. I do still test and if the nitrate levels go above 20 I leave out the KNO3 for a few days. I never add P as my tap is full of the stuff. My consistant dosing is K and plenty of traces, and occasionally Fe. This suits my tank and it has remained stable and algae free for quite some time now.

    Ian
     
  3. imatrout

    imatrout Prolific Poster

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    Re: Dose For High Fish Load

    Thanks Ian. That's what I kind of thought. I think what I'll try to do is Measur ethe Nitrates daily this week and adjust my reset dosage next week. Funny thing too, I just tested my tap water and Nitrate was measurable (Salifert test kit 3-5 ppm).
     
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