The DOS Dual Reservoir is a dual reservoir, perfect for storing 2 x 2 liters of liquid! The reservoir even tells you when it’s time to refill! The system also works excellently for dosing other additives. For most saltwater aquariums adding Calcium to their tanks, this amount is more than enough to last at least two weeks.

The DOS Dual Reservoir is easy to connect to your DOS dosing system and Apex. This allows you to view all values in real-time.

• Storage capacity: 2 liters of fluid per resevoir
• Use for 2-part (alk/Cal), additives and other applications
• Weight: 2 pounds
• Measurements: approx. 26.5 x 21.5 x 14 cm