Oase BioMaster Thermo 250 Filter
Integrated heater – Provides precise and uniform temperature levels and reduces the amount of equipment seen inside the aquarium by housing the heater in the unit
EasyClean pre-filter module – Module can be removed separately from the rest of the filter. This reduces maintenance, increases filter efficiency, and extends the life of main filter foams. Customize the pre-filter with coarse 30 ppi, fine 45 ppi, ultra-fine 60 ppi, and activated carbon 45 ppi filter foams
No mess maintenance – Integrated safety locking features on the handle, pre-filter, and check valve in the inlet/outlet connection unit, ensure no accidental spillage or messy maintenance
Sealed filter housing – Prevents water leakage and maintains a clean, stable environment inside the aquarium
| Specification | Value |
|---|---|
| Heater Type | Integrated |
| Pre-filter Options | Coarse 30 ppi, Fine 45 ppi, Ultra-fine 60 ppi, Activated Carbon 45 ppi |
| Maintenance Design | EasyClean removable module with safety locks |
| Water Flow | 250 liters per hour |
FAQ
Can the pre-filter be changed to suit different water conditions?
Yes, the pre-filter module supports customization with coarse, fine, ultra-fine, and activated carbon foams to match different water conditions and fish needs.
Is the heater easy to replace or maintain?
The heater is integrated into the unit and does not require separate replacement. It provides consistent temperature control and is protected by the sealed housing.
Does the filter require special tools for maintenance?
No, the EasyClean pre-filter module can be removed and cleaned without tools. Safety locks prevent accidental spillage during handling.

Trevor MacLeod –
The filter works well in maintaining stable water temperature. The pre-filter is easy to remove and clean. I’ve used the fine 45 ppi foam for my community tank and it helps with clarity. No messy maintenance thanks to the locking system.
Owen Wilson –
I appreciate the compact design and the integrated heater. It keeps my tank at a steady temperature without needing extra equipment. The filter is quiet and efficient, though I had to adjust the pre-filter to match my tank’s needs.
Lily Harris –
Great for a small to medium aquarium. The safety locks prevent leaks during cleaning. I switched to activated carbon for better chemical control and noticed a difference in water quality after a week.