70 reviews

2Hr Aquarist APT Zero

Tackle the most demanding plants, or just enjoy everyday magic in new tanks with aquasoil, and aquariums with more fish. The easiest way to unlock the true potential of your planted tank today.

The 2Hr Aquarist All-In-One Fertilizer.
Richer Colors, Less Algae. Better Results.
FAQ Here.

Dose 5ml per 100L four times a week or 3ml per 100L daily. 


200ml lasts ~3mths for an 18 Gal / 70L tank. Pump not included.


500ml lasts ~3mths for a 50 Gal / 190L tank. Pump not included.


1000ml lasts ~3mths for a 100 Gal / 380L tank. Pump not included.


Our signature Standard Pack comes with a calibrated pump.
300ml. Lasts ~3mths for a 30 Gal / 115L tank.




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Customer Reviews
5.0 Based on 69 Reviews
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Filter Reviews:
    Karleen M.
    United States United States

    Best fert I’ve used

    I’ve tried many ferts and this by far is what works best in my tank! Easiest way to do the lean method with Less algae. Will be purchasing again!

    Tim F.
    United States United States

    Love the Colors!

    Rotala vietnam is looking nice and red - I traditionally struggle with dosing but the results help me stay the course.

    Shawn W.
    Singapore Singapore

    Great first time experience

    Don was very helpful in advising me on what the best fertiliser was for my aquarium. I had lots of livestock at the time, and so the APT Zero made most sense. Accompanying it with CO2 injection, and the phosphorus from waste, my Monte Carlo and Dwarf Hair Grass grew wonderfully.

    Kevin H.
    United States United States

    Great fertilizer

    I’ve always had success with this fertilizer. Great plant growth, low algae, nice colors. Now the bottle even comes with a measured pump so I don’t have to use my teaspoons anymore!

    Ian B.
    United States United States

    Excellent lean fertilizer

    Much more affordable than the ADA system and plants showing no signs of deficiencies due to low micros. I do have some hair/string algae that I think is due to lack of nitrates (measured consistently at zero), so I am going to try going to APT 3/Complete for the added macros.


    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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    September 02, 2021 4 min read

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    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?
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    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.
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    Root or water column fertilization?

    Root or water column fertilization?

    July 15, 2020 5 min read

    Should we use root tablets or dose directly into the water column for your planted tank? What works and why...
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