Oase Biomaster Thermo 350 Aquarium Filter

Bought in February 2025 but didn’t unbox and start using until around May 2025. I ended up getting a larger filter and no longer need this one. It’s a fully cycled filter and comes with all original filter media. The Bio master thermos 350 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