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The HMF – What's That? — Seriously Fish

Filtration | Hamburg Matten Filter | Poret Polyether Foam Media

Mattenfilter - SWISSTROPICALS

Mattenfilter - SWISSTROPICALS

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Mattenfilter -- air or powerhead? | Capital Cichlid Association

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Hamburg Matten Filters are space saving, non leaking and supremely efficient. HMF`s do better when not cleaned.

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Going to do a Mattenfilter on my 55 gallon redo! Any advice? | AquariaCentral.com

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How to Install Corner Hamburger Mattenfilter (HMF) in Aquarium - YouTube

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Curved Hamburg Matten Filter | Curved Hamburg Matten Filter - very easy install- no DIY modification required -Huge Surface Area for Beneficial Bacteria to grow -Very Low Maintenance... | By Envobee Shrimp | Facebook

8.7.3. Hamburg Matten Aquarium Filter

Hamburg Matten Bio Mobile sponge filter fish shrimp HMF black Media 15x10x34cmXL | eBay

Hamburger Mattenfilter HMF | AquariaCentral.com

HMF FILTER [Archive] - SimplyDiscus

The HMF – What's That? — Seriously Fish

The Venerable Mattenfilter - Biotope One

Anyone speak German? Wish I could find this filter! - Filtration, lighting and other equipment - The Shrimp Spot

Aquarium Submersible 3 in 1 Power Head with spry bar 300L/H - Envobee Shrimp

Hamburg Matten Mobile sponge filter fish Discus Cichlid HMF Blue 15x10x25cm XL | eBay

Poret Hamburg Matten Filter Uk | Leamington

Hamburg Matten Mobile sponge filter fish Discus Cichlid HMF Blue 15x10x25cm XL | eBay