![[Resun] 3pcs Replacement Filter Wool for 21L Starter Aquarium Fish Tank | SMX350 Hang-On Filter](http://cdn.shopify.com/s/files/1/0077/7247/1359/products/21L_Starter_Aquarium_Replacement_Filter_Wool-01_800x800_{width}x.jpg?v=1552533332)
![[Resun] 3pcs Replacement Filter Wool for 21L Starter Aquarium Fish Tank | SMX350 Hang-On Filter](http://cdn.shopify.com/s/files/1/0077/7247/1359/products/21L_Starter_Aquarium_Replacement_Filter_Wool-01_800x800_530x@2x.jpg?v=1552533332)
Easy to Use.
Comes with 3pcs of replacement filter wool for the 21L Starter Aquarium Fish Tank and/or SMX350 Hang-On Filter.
Suitable for:
- 21L Starter Aquarium Fish Tank
- SMX350 Hang-On Filter
Comes with 3pcs of replacement filter wool for the 21L Starter Aquarium Fish Tank and/or SMX350 Hang-On Filter.
Suitable for: