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Oase BioMaster Prefilter Upgrade Kit
Oase BioMaster Prefilter Upgrade Kit
Oase BioMaster Prefilter Upgrade Kit
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Oase BioMaster Prefilter Upgrade Kit

Marsoni M251S
Sale price$31.95
Pay 4 payments of $7.99 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Oase BioMaster Prefilter Upgrade KitThe Biomaster upgrade kit can be retrofitted to any model Biomaster filter. Kits are available for all sizes, and can be used on both Thermo and non thermo versions of the filter. A newly designed tube inside the prefilter ensures flow rate is maintained for longer, thereby extending the period between cleans of the prefilter foams. Used in conjunction with the new 10ppi foams, this serves to provide adequate prefilter protection for the main filter
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Your Oase BioMaster Prefilter Upgrade Kit orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

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You'll receive a tracking link by email once your Oase BioMaster Prefilter Upgrade Kit ships.

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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.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 2175 reviews
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Product Reviews
B
Verified Purchase
Brittany Lockwood
Los Angeles, US
★★★★★ 5
Fishing hat
Size: One Size, Color: Dark Stone/Sunset Fish Graphic
Very sturdy nice fishing hat! Love the colors and the material seems easy to care for. Comfortable fit and adjustment.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
J
Verified Purchase
Jessica Woodring
Alexandria, US
★★★★★ 5
Good hat
Size: One Size, Color: Iron/Pfg Fotw
Very nice hat looks great on my husband. Love the detail of the rope in the front stands out compared to the 50 other hats that he owns.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2025
A
Verified Purchase
ashley jewett
Omaha, US
★★★★★ 5
Great Hat for Smaller Head
Size: One Size, Color: Shark/Sunset Fish Graphic
I have a smaller head and it is so difficult to find hats in the style I prefer without them being super tall and taking over. This is great if you have a smaller head and face!! I love it so much!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
B
Verified Purchase
brett sharpe
Draper, US
★★★★★ 5
sturdy and fits right
Size: One Size, Color: Beach/Trout Shine
amazing hat and quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2025
E
Verified Purchase
Ethan jackson
Lowell, US
★★★★★ 5
Cool
Size: One Size, Color: Cool Grey/Pfg Fotw
Pretty good love it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026

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