2Hr Aquarist APT e Aquarium Heater For lower-tech tanks without CO₂

For lower-tech tanks without CO₂ or with less demanding plants

making it the ideal choice for low to medium-demand plant setups or budget-conscious aquascapers

135AH is a high-output LED light designed for open and covered aquariums

APT e (APT EI) is a highly concentrated liquid fertilizer for planted aquariums

2Hr Aquarist APT e Aquarium Heater For lower-tech tanks without CO₂2Hr Aquarist APT e EI Method Liquid Fertilizer APT e (APT EI) is a highly concentrated liquid fertilizer for planted aquariums, built around the Estimative Index (EI) methodology pioneered by Tom Barr. It delivers a ready to use EI solution no mixing dry salts, no calculations, no DIY preparation. Just measure and dose. What Makes APT e Different Compared to standard homemade EI mixes, APT e is formulated with roughly half the nitrogen relative to