Eheim CompactON Pump 2100 Butterflyfish The 10 lb aluminum cylinder

The 10 lb aluminum cylinder reduces refill frequency for many aquarium setups

Test iron with an accurate test kit before advanced dosing

Compatible with the optional Mag-Float scraper accessory sold separately

The Deep Six Hydrometer is designed for routine saltwater aquarium maintenance where salinity stability matters

Larger capacity helps extend time between refills

Eheim CompactON Pump 2100 Butterflyfish The 10 lb aluminum cylinderEheim CompactON Pump 2100 Why Choose Eheim CompactON Pump 2100 EHEIM compactON is the compact and yet powerful aquarium pump. Available in six sizes with flow rates from 170 to 5000 liters per hour. The EHEIM compactON aquarium pump is characterized by its name due to it's compact design. The larger EHEIM compactON 2100, 3000 and 5000 can also be modified for use out of water using the appropriate accessories (included). The high quality of the