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9 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.

#200ml

200ml lasts ~3mths for a 30 Gal / 115L tank. Pump not included. 

#500ml

500ml lasts ~3mths for a 65 Gal / 150L tank. Pump not included.

#1000ml

1000ml lasts ~3mths for a 130 Gal / 500L tank. Pump not included.

#standard

Our signature Standard Pack comes with a calibrated pump.
300ml. Lasts ~3mths for a 40 Gal / 150L tank.

Size

PEERLESS PERFORMANCE

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Customer Reviews
5.0 Based on 9 Reviews
5 ★
100% 
9
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Filter Reviews:
    AS
    24/10/2022
    Alex S.
    Israel Israel

    Great

    Great ferts, awesome company

    The 2Hr Aquarist 2Hr Aquarist APT Estimative Index ReviewThe 2Hr Aquarist 2Hr Aquarist APT Estimative Index Review
    JA
    19/10/2022
    jay a.
    United Arab Emirates United Arab Emirates

    in the Middle of the East

    best ever fertilizer APT fertilizers and roottabs��Greetings from Philippines

    The 2Hr Aquarist 2Hr Aquarist APT Estimative Index Review
    AM
    09/01/2022
    Ariel M.
    Israel Israel

    אחלה

    מוצר ממש טוב יותר טוב לדעתי מסיכם. ללא בעיות של חישובים עושה את העבודה תוך שבוע ראו כבר תוצאה

    The 2Hr Aquarist 2Hr Aquarist APT Estimative Index Review
    E
    21/10/2021
    erwin
    Singapore Singapore

    Best APT Fert

    APT EI is the best APT Fert. It's not magic, its just maths. APT EI has more nutrients per ml than all the other APT ferts. I use it for both CO2 injected and non-CO2 injected tanks.

    The 2Hr Aquarist 2Hr Aquarist APT Estimative Index Review
    MB
    11/06/2021
    Mohammed B.
    United States United States

    Plant Power Juice In a Bottle

    This product has worked extremely well for me. All my plants are very vibrant in color and have been growing like crazy. All my greens pop out as well as my reds. The one thing that you should know is there is no pump attachment available in the US, so you will need to purchase something on Amazon, but Don (2Hr Aquarist Team member) has told me they are working on something as well as the costumer service is like no other, there is so much information on there blogs and they want you to succeed and help you out when you need it. 10/10 for the whole 2Hr Aquarist product and team. Definitely recommend for anyone who’s thinking about this.

    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.

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