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 potassium for richer colours^
Dose 3ml per 100L daily. 
 
Our Standard 300ml Pack comes with a calibrated pump. 1ml per press.
Lasts ~3mths for a 30 Gal / 115L tank.
- why + 
*in terms of total soluble elemental fertiliser per ml. 
 ^in terms of the amount of potassium per ml.APT 1 replicates APT 3's winning formula without nitrates and phosphates. This gives maximum algae control for new tanks (we recommend all tanks to start with APT 1 for the first 1-3 months), and optimal long term performance for tanks with more fish. This is because fish food and waste already supply phosphates and nitrates. 
 FAQ Here.
- ingredients - 
APT 1 / Zero 
 Liquid inorganic macronutrient fertiliser
 NPK (Mg) fertiliser with micronutrients and trace amounts of Boron (B), Copper (Cu), Manganese (Mn), Molybdenum (Mo) and Zinc (Zn).
 0-0-7 (+1.4)
 7% Total Potassium oxide (K2O)
 1.4% Magnesium oxide (MgO)
 0.09% Total Iron chelated by EDTA, DTPA and EDDHA.
 All nutrients are completely water soluble.
 Ingredients: Potassium sulphate (CMC1 CAS n°7778-80-5) Potassium chloride (CMC1 CAS n°7447-40-7)Magnesium sulphate (CMC1 CAS n°7487-88-9)
 
        
 
            
                        
           
           
           
           
           
           
             
           
             
           
            