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13 best biochemical under $5.00

We picked 13 biochemical from AliExpress with real orders and good reviews. Prices go from $0.92 to $3.61, the average rating is 4.8 stars and the most popular one has 7k orders. Every product opens on AliExpress, where you pay with buyer protection.

Updated: 2026-11

  1. 1Aquarium Accessories Biochemical Cotton Filter Fish Tank Pond Foam Sponge Filter Black 15 -66%Aquarium Accessories Biochemical Cotton Filter Fish Tank Pond Foam Sponge Filter Black 15 25 35$0.92 $2.71★ 4.8 · 7k soldView on AliExpress →
  2. 23cm Thick Aquarium Filter Super Thick Biochemical Filter Cotton Sponge for Aquarium Fish T-54%3cm Thick Aquarium Filter Super Thick Biochemical Filter Cotton Sponge for Aquarium Fish Tank Bio$2.85 $6.13★ 4.9 · 5.6k soldView on AliExpress →
  3. 3Aquarium Filter Super Thick Biochemical Filter Cotton Sponge for Aquarium Fish Tank Bio Co-53%Aquarium Filter Super Thick Biochemical Filter Cotton Sponge for Aquarium Fish Tank Bio Cotton$3.27 $6.90★ 4.9 · 4.9k soldView on AliExpress →
  4. 49Layers Aquarium Fish Tank Filter Sponge No Glue Foam Biochemical Cotton Aquarium Filtrati-56%9Layers Aquarium Fish Tank Filter Sponge No Glue Foam Biochemical Cotton Aquarium Filtration$2.93 $6.66★ 4.9 · 4.4k soldView on AliExpress →
  5. 53cm Thick Aquarium Filter Super Thick Biochemical Filter Cotton Sponge for Aquarium Fish T-72%3cm Thick Aquarium Filter Super Thick Biochemical Filter Cotton Sponge for Aquarium Fish Tank Bio$2.93 $10.34★ 4.7 · 4k soldView on AliExpress →
  6. 6Aquarium Filter Sponge For Fish Tank Air Pump Skimmer Biochemical Sponge Filter Aquarium B-40%Aquarium Filter Sponge For Fish Tank Air Pump Skimmer Biochemical Sponge Filter Aquarium Bio$0.92 $1.54★ 4.8 · 3.2k soldView on AliExpress →
  7. 7Aquarium Accessories Biochemical Cotton Filter Practical Fish Tank Pond Foam Sponge Filter-67%Aquarium Accessories Biochemical Cotton Filter Practical Fish Tank Pond Foam Sponge Filter Black$0.92 $2.83★ 4.7 · 2.6k soldView on AliExpress →
  8. 8Multi Sizes Black Filtration Foam Aquarium Fish Tank Biochemical Filter Sponge Pad Skimmer-74%Multi Sizes Black Filtration Foam Aquarium Fish Tank Biochemical Filter Sponge Pad Skimmer Long$3.27 $12.49★ 4.7 · 2.3k soldView on AliExpress →
  9. 93 Sizes Fish Tank Air Pump Skimmer Aquarium Fish Filter Accessories Practical Aquarium Bio-60%3 Sizes Fish Tank Air Pump Skimmer Aquarium Fish Filter Accessories Practical Aquarium Biochemical$1.92 $4.79★ 4.9 · 1.7k soldView on AliExpress →
  10. 103 Sizes Fish Tank Air Pump Skimmer Aquarium Fish Filter Accessories Practical Aquarium Bio-75%3 Sizes Fish Tank Air Pump Skimmer Aquarium Fish Filter Accessories Practical Aquarium Biochemical$1.76 $6.94★ 4.8 · 1.7k soldView on AliExpress →
  11. 11100g 250g 500g Nano Aquarium Bio Balls Biochemical Ball Filter Media for Aquarium Filter-73%100g 250g 500g Nano Aquarium Bio Balls Biochemical Ball Filter Media for Aquarium Filter$3.61 $13.16★ 4.8 · 1.6k soldView on AliExpress →
  12. 125 Sizes Aquarium Fish Tank Air Pump Bio Sponge Filter&Replaceable Biochemical Cotton Filtr-53%5 Sizes Aquarium Fish Tank Air Pump Bio Sponge Filter&Replaceable Biochemical Cotton Filtration$0.92 $1.96★ 4.6 · 710 soldView on AliExpress →
  13. 13Mini Aquarium Sponge Filter Fish Tank Shrimp Pond Air Pump Biochemical Sponge Filter Aquar-70%Mini Aquarium Sponge Filter Fish Tank Shrimp Pond Air Pump Biochemical Sponge Filter Aquarium$0.92 $3.02★ 4.6 · 386 soldView on AliExpress →

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