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3 reviews

2Hr Aquarist APT Estimative Index

With the 2HR Aquarist APT-EI, the famous nutrient dosing approach pioneered by Tom Barr is now available in a ready-to-use concentrate that removes the guesswork from trying to recreate this powerful and sometimes elusive formula.

An overview of the EI methodology can be found here.

Dose 5ml per 100L 3 times per week or 2ml per 100L daily.
FAQ here.

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Customer Reviews
5.0 Based on 3 Reviews
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Filter Reviews:
    WS
    11/04/2021
    WIROJ S.
    Thailand Thailand
    The best result for farm tanks

    The plants look healthy and Fast growth No livestock lose Suitable with dutchstyle and Farm tank.

    AG
    10/04/2021
    ANGIELITO G.
    Philippines Philippines
    Best fertilizer i have used so far

    My 3rd time to review this. Best ferts i’ve used so far!!!

    The 2Hr Aquarist 2Hr Aquarist APT Estimative Index Review
    PH
    16/02/2021
    Paul H.
    United States United States
    Excellent for carpet growth

    I’ve had excellent luck growing my mini hair grass carpet with this fertilizer. I have a high energy system (60 PAR, 30 ppm CO2, 7.5 ppm O2) so I have been dosing 5x the recommended amount of fertilizer daily to ensure there are no nutrient deficiencies in the tank (and to stop any feast/famine cycle). I combine this with a 50% weekly water change. All of these steps follow George Farmer’s recommendations for a high plant growth with the EI method.

    The 2Hr Aquarist 2Hr Aquarist APT Estimative Index Review

    Above: a fast-growing 'farm tank' using APT Complete.

    view current users' tanks

    Unlock the full potential of your planted tank today!


    Above: a slower-growing non CO2 tank using APT Zero. 


    Questions?

    we are here to help

    Questions on usage, dosage or your tank? Let us know.

    We also have a detailed FAQ here that may help.

    What Planted Tank Fertilizer should I use?

    What Planted Tank Fertilizer should I use?

    October 16, 2020 3 min read

    Do I really need fertilizers for my aquarium? There are so many choices in the market- which is the right one for me?
    Read More
    How to read fertilizer labels, and what is ppm ?

    How to read fertilizer labels, and what is ppm ?

    August 17, 2020 2 min read

    Fertilizer labels can be confusing. This is how to read fertilizer labels for your planted tank or aquarium.
    Read More
    Root or water column fertilization?

    Root or water column fertilization?

    July 15, 2020 6 min read

    Should we use root tablets or dose directly into the water column for your planted tank? What works and why...
    Read More
    When do I start dosing fertilizer into a newly setup planted tank?

    When do I start dosing fertilizer into a newly setup planted tank?

    June 25, 2020 1 min read

    The short answer is that you should start dosing water column fertilizers as soon as you have plants in the new tank and no later.

    New plants have no established root system, which limits their ability to draw nutrients from the soil.

    Read More

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