Marineland Cartridge Media Refill for Penguin 200/350 Filter
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- Refillable cartridge frame
- Better than media bags
- patented ribbed design
The Penguin Refillable Media Cartridges are better than media bags, the patented ribbed design keeps the media of choice evenly distributed for maximum water-to-media contact, and the snap open and lock tight design ensures no media spillage.