![Hamburg Matten Filters are space saving, non leaking and supremely efficient. HMF`s do better when not cleaned. Hamburg Matten Filters are space saving, non leaking and supremely efficient. HMF`s do better when not cleaned.](https://fish2water.com/resources/Mulm%20hmf%20tang%20tank.png)
Hamburg Matten Filters are space saving, non leaking and supremely efficient. HMF`s do better when not cleaned.
![Hamburg Matten Filters are space saving, non leaking and supremely efficient. HMF`s do better when not cleaned. Hamburg Matten Filters are space saving, non leaking and supremely efficient. HMF`s do better when not cleaned.](https://fish2water.com/resources/APA%20Small%20with%20Radar2.png)
Hamburg Matten Filters are space saving, non leaking and supremely efficient. HMF`s do better when not cleaned.
![HOW TO: easy DIY aquarium filter – Hamburg Mattenfilter – sponge filter TUTORIAL – Hydroculture Global HOW TO: easy DIY aquarium filter – Hamburg Mattenfilter – sponge filter TUTORIAL – Hydroculture Global](https://hydroculture.global/wp-content/uploads/2021/02/1612449213_maxresdefault-758x426.jpg)
HOW TO: easy DIY aquarium filter – Hamburg Mattenfilter – sponge filter TUTORIAL – Hydroculture Global
Black 50ppi Bio Foam Sponge for Aquarium Fish Shrimp Tank Filter, good for Sump Matten Filter HMF Mattenfilter Hamburg House for Denitrifying Bacteria, Pet Supplies, Homes & Other Pet Accessories on Carousell
![3D Printable Hamburger Mattenfilter + Tschechischer Luftheber (Filter+Airlift for aquarium) by Alois Mack 3D Printable Hamburger Mattenfilter + Tschechischer Luftheber (Filter+Airlift for aquarium) by Alois Mack](https://cdn.myminifactory.com/assets/object-assets/5d6930fd94e09/images/720X720-20180913-123735.jpg)
3D Printable Hamburger Mattenfilter + Tschechischer Luftheber (Filter+Airlift for aquarium) by Alois Mack
![Hamburg Matten Biological Sponge Filter Set 25.5x25x3cm Polyether HMF shrimp fish fry breed (Black, PPI 45) : Amazon.co.uk: Pet Supplies Hamburg Matten Biological Sponge Filter Set 25.5x25x3cm Polyether HMF shrimp fish fry breed (Black, PPI 45) : Amazon.co.uk: Pet Supplies](https://m.media-amazon.com/images/I/61jaKF5TP3L._AC_SX679_.jpg)
Hamburg Matten Biological Sponge Filter Set 25.5x25x3cm Polyether HMF shrimp fish fry breed (Black, PPI 45) : Amazon.co.uk: Pet Supplies
![Hamburg Matten Filters are space saving, non leaking and supremely efficient. HMF`s do better when not cleaned. Hamburg Matten Filters are space saving, non leaking and supremely efficient. HMF`s do better when not cleaned.](https://fish2water.com/resources/HMF%20malawi%20corner%20filter.png)