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2Hr Aquarist APT 3

Artful Intelligence.

Compared to conventional fertilisers (largely developed pre-2000s for 'fish tanks' with simpler / hardy plants):
3X more concentrated for demanding species*
2X more nitrate limiting for richer colours^

Dose 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 Standard 300ml Pack comes with a calibrated pump. 1ml per press.
Lasts ~3mths for a 30 Gal / 115L tank.


Our Starter 100ml Pack comes with a calibrated dropper.
Lasts ~3mths for an 8 Gal / 30L tank. Available in Europe soon.



*in terms of total soluble elemental fertiliser per ml.
^in terms of the relative ratio of nitrogen vis a vis other nutrients per ml.

APT's concentrated yet calibrated Capstone Formula allows you to grow the hobby's most demanding plants, and also enjoy everyday magic in the simplest tank.
100% Comprehensive NPK, Macro, Micro & Trace elements.
FAQ Here.


APT 3 / Complete
Liquid inorganic macronutrient fertiliser
NPK (Mg) fertiliser with micronutrients and trace amounts of Boron (B), Copper (Cu), Manganese (Mn), Molybdenum (Mo) and Zinc (Zn).
0.7-0.9-7 (+1.6)

0.7% Total Nitrogen (N)
- 0.7% nitric nitrogen
0.9% Total Phosphorus pentoxide (P2O5)
7% Total Potassium oxide (K2O)
1.6% Magnesium oxide (MgO)
0.09% Total Iron chelated by EDTA, DTPA and EDDHA.
All nutrients are completely water soluble.

Potassium sulphate (CMC1 CAS n°7778-80-5) Potassium chloride (CMC1 CAS n°7447-40-7) Magnesium nitrate (CMC1 CAS n°10377-60-3) Magnesium sulphate (CMC1 CAS n°7487-88-9) Potassium phosphate (CMC1 CAS n°7778-77-0)

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