The Bio master thermos 250 has an integrated heater in compact Filter design
The built-in heater provides your aquarium with Precise and uniform temperature levels while the product integration delivers unobstructed views of your Aquarium
External filter operates quietly to circulate and filter your aquarium water
Includes 4-stage filtration: biological, mechanical, chemical, and prefiltration
Hel-x, suspended Filter media, creates the optimal surface area for beneficial bacteria growth