2hr Aquarist APT Zero


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2hr Aquarist APT Zero – For tanks with more fish, fewer plants. All in One Fertiliser for Richer Colors, Less Algae and Better Results. For new tanks (<3 months) with aquasoil. Comprehensive nutrition without nitrates and phosphates for maximum algae control.


2hr Aquarist APT Zero – All in One Fertilizer for Richer Colors, Less Algae and Better Results.


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.

APT Zero contains no nitrates and phosphates, and should be used if you have a fish population that produces adequate nitrates in the tank (specifically, If your tank measures >10ppm NO3 by end of the week with no fertilizer dosing and water change).

APT Zero can also be used to induce steep nitrate limitation in tanks, which gives the deepest reds in species such as Rotala rotundifolia and Ludwigia arcuata. This approach is usually paired with a rich substrate to prevent long term stunting due to low nitrogen levels. To this end, APT Zero can be used as a replacement for the ADA range of liquid fertilizers (Bright K neutral, Green brightly mineral and Green brightly iron) to similar effect.

APT Zero allows you to enjoy all the benefits of the ADA approach- unparalleled algae control and the ability to unlock the richest reds in popular plants through nitrate limitation. It should be paired with the use of aquasoil and/or a higher fishload environment.

How much should I use?

Each 5ml per 100L dose adds 3.8ppm Potassium (K), 0.05ppm Iron (Fe), 0.5ppm Magnesium (Mg) and additional amounts of Boron (B), Copper (Cu), Manganese (Mn), Molybdenum (Mo) and Zinc (Zn).

The above dosage is designed to be dosed 4 times a week. So the total per week adds up to: 15.2ppm Potassium (K), 0.2ppm Iron (Fe), 1.6ppm Magnesium (Mg) and additional amounts of Boron (B), Copper (Cu), Manganese (Mn), Molybdenum (Mo) and Zinc (Zn).

Total Dose in 1 week: this is the important target. It is the cumulative total amount that you should dose in one week. Plants do better with more uniform access to nutrients, so achieve this weekly target by dosing daily or a few times a week. Precision is less important than consistency.  

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Packaging sizes: 200ml (item no. 10049) and 500ml (item no. 10056)

Additional information


200ml, 500ml

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