SERA Crystal Clear | This innovative, high performance, 3d fiber structure of sera crystal removes small particles like floating algae or sludge! They are 80% reusable after... | By Rainbow Aquarium | Facebook
![Crystal Clear Professional 12 Pieces High Performance Filter Medium for Mechanical Filtration - Aquarium Connection Crystal Clear Professional 12 Pieces High Performance Filter Medium for Mechanical Filtration - Aquarium Connection](https://aquariumconnection.com/wp-content/uploads/SER481.jpg)
Crystal Clear Professional 12 Pieces High Performance Filter Medium for Mechanical Filtration - Aquarium Connection
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