


Oase Biomaster2 250 External Filter
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Oase Biomaster2 250 External FilterThe BioMaster 250 external filter fulfils the highest demands of water filtration and filter cleaning. The combination of highly effective biological filtration by Hel X and mechanical biological cleaning by filter sponges ensures healthy and clear aquarium water. The HeatUp adjustable heater can be easily retrofitted if required. The BioMaster 250 is suitable for aquariums with a volume of up to 250 litres. The EasyClean pre filter chamber enables
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.5 ★★★★★
Based on 396 reviews
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Product Reviews
★★★★★ 2
Not heavy enough.
Size: 19inch
Does not support a double umbrella.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Great toy!
Color: Grass Green, Size: Medium
We have a boxer and pit mix and he destroys everything. This toy however lasted the longest. He played with this every day and he plays very rough. But after 3 months I finally threw it out. It was still in tact but it was about to start falling apart. I will definitely buy another one.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Great for aggressive chewers!
Color: Mixed, Size: Medium
My dachshund pit mix is VERY hard on toys. She is a very aggressive chewer. She loves this toy and so far hasn't destroyed it! I was concerned because the center is softer, but because of the shape she is unable to get a good grip on it to chew it to pieces. Very happy with it so far!
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Great toy
Color: Grass Green, Size: Medium
My dog could choose all kinds of things apart absolutely loves this and it's very sturdy
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Reviewed in the United States on April 20, 2026
★★★★★ 4
Smaller than pictured
Color: Mixed, Size: Medium, Color: Mixed, Size: Medium
It’s a lot smaller than pictured and I have the same dog type as was depicted in the one of the pictures. The dog like it so I guess that’s good. I will not be playing tug of war with him using this. I like my fingers thank you very much. I would say it durable. He destroys most toys in minutes. He did destroy the squeaky part in about 10 minutes so bonus points for that.
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Reviewed in the United States on October 11, 2025