Eheim 250 Watt Thermocontrol Aquarium Heater Timers & Meters Mount the skimmer on clean

Mount the skimmer on clean glass using the Magnet Holder

and it tolerates fairly low light

By routing skimmer intake air through CO2 absorbent media before it reaches the skimmer

Part number: HDRS-ATO-300

so larger fish should be avoided

Eheim 250 Watt Thermocontrol Aquarium Heater Timers & Meters Mount the skimmer on cleanEheim 250 Watt Thermocontrol Aquarium Heater Precise 250 Watt Heating for Large Aquariums The Eheim 250 Watt Thermocontrol Aquarium Heater is designed for large freshwater and marine aquariums that need dependable, adjustable heat output. Its durable glass jacket increases the heating surface, while the precise thermostat helps maintain a stable aquarium temperature for demanding systems. Eheim Thermocontrol 250W Heater Features 250 watt adjustable