![[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/Banner_6c535ca5-c8a5-4b8c-a6df-c03e3f94496d_{width}x.jpg?v=1652521329)
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: