Zoo Med Aquasun Dual Timer

Dual timer--split-- Helps provide natural day/night cycle for your fish, plants, or live coral. Dual Timer for Aquarium lighting devices. Top outlet controlled by timer, bottom outlet is continuous. Regulate your aquarium’s photoperiod with this easy-to-use dual timer! The Zoo Med Dual Timer provides natural day and night cycle for your fish, plants, or live coral. Top outlet controlled by timer, bottom outlet is continuous. Regulate your aquarium's photoperiod with this easy-to-use dual timer. Size: Aquasun 2-Plug Timer.