APT Shop APT aquarium fertilizers by 2Hr Aquarist for healthy aquatic plants and balanced planted aquarium growth. Products 2Hr Aquarist APT3 Complete 200ml 2Hr Aquarist APT3 Complete 500ml 2Hr Aquarist APT3 Complete 1000ml 2Hr Aquarist APT1 Zero 200ml 2Hr Aquarist APT1 Zero 500ml 2Hr Aquarist APT Fix 200ml 2Hr Aquarist APT Pure 250ml APT · Home