Award-winning aquascapers' choice.
Lean but powerful. The 2Hr Aquarist APT Zero All-in-one Aquarium Fertilizer contains the full potency of APT Complete, but without nitrates and phosphates. It is specially designed for tanks with significant fishload and for hobbyists looking to replicate the renowned ADA dosing system. Its leaner dosing approach provides maximum algae control.
Dose 5ml per 100L four times a week or 3ml per 100L daily. FAQ here.
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).