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100 Bio Balls Sump Tank Filter Media Bioballs Marine Reef Aquarium Fish Tank

4.6316 product ratings

Aquarium Pond Outlet (15701)

98.9% positive Feedback

Price:

£12.45

Free delivery in 2-3 days

Estimated between Thu, 14 Aug and Fri, 15 Aug

Returns:

60 days return. Buyer pays for return postage. If you use an eBay delivery label, it will be deducted from your refund amount.

Condition:

New

Maintenance: Rinse thoroughly prior to use until the water runs clear. To preserve biological activity, it is advised to use aquarium water when cleaning rather than tap water. Our 21mm Bio Balls provide a large surface area for bacteria to develop, helping to break down ammonia and nitrite.

Ratings and reviews

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4.6

16 product ratings

13 users rated this 5 out of 5 stars
2 users rated this 4 out of 5 stars
0 users rated this 3 out of 5 stars
0 users rated this 2 out of 5 stars
1 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 14 reviews

by 123-topcat
01 May, 2022
Does the job
Excellent product does what it needs to do
Verified purchase: YesCondition: New
by chabro-9534
04 Aug, 2021
great value for money..
fantastic size for the project i was doing so i got more bio balls in.
Verified purchase: YesCondition: New
by obri.raym
12 May, 2021
Good product
Verified purchase: YesCondition: New
by ericsamsam39
22 Apr, 2022
Bio Balls
Great Product....remember you will need a lot..
Verified purchase: YesCondition: New
by bugeyemikee2012-9
20 Jun, 2025
very good ,but I needed larger balls for...
very good ,but I needed larger balls for my pond filter 18inches by 18 inches and 14inches deep.
Verified purchase: YesCondition: New
by wpe6744
08 Jun, 2024
Not much to say yet as the take time to work may need more of them .
Not much to say yet as the take time to work may need more of them .
Verified purchase: YesCondition: New
by ken44.0121
23 May, 2025
Very pleased with quality bio balls many...
Very pleased with quality bio balls many thanks
Verified purchase: YesCondition: New
by wabur95
13 Jan, 2021
Bio balls
Good quality and good value 👍
Verified purchase: YesCondition: New
by deivydazakeli_0
05 Feb, 2023
Nice
Really good
Verified purchase: YesCondition: New
by martrockfishing2
31 Jul, 2022
To small
To small for my pond filter threw them away
Verified purchase: YesCondition: New