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

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

#500ml

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

#1000ml

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

#standard

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

#starter

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

#600ml

Comes with a calibrated pump. 1ml per press.
Lasts ~3 mths for a 60 Gal / 230L tank.

Why

*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.

Ingredients

GUARANTEED ANALYSIS
Total Nitrogen (N)........................................... 0.75%
0.75% Nitrate Nitrogen
Available Phosphoric Acid (P2O5)....................0.69%
Soluble Potash (K2O)....................................... 4.52%
Magnesium (Mg)............................................. 1.10%
Iron (Fe) ...........................................................0.12%
0.12% Chelated Iron
Derived from: Potassium Sulphate, PotassiumPhosphate, Potassium Chloride, MagnesiumNitrate, Magnesium Sulphate, DTPA Iron, EDTAIron, EDDHA Iron

Further information here.