Aquarium Fluidized Moving Bed Filter,Media Submersible Sponge Filter with Air St

1 Fluidized Bed Material. AQQA-----Aquarium accessories,Quality A+. The bottom cover and internal filtering sponge can prevent fish from inhaling. 3 Dissolved Oxygen. Dissolved Oxygen ✔ ✔ ✘ ✘ ✘ ✘. Installation Step Diagram.

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