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Amazon.com : EHEIM Classic 2215 External Canister Filter with Media for up to 92 US Gallons : Aquarium Filters : Pet Supplies
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Amazon.com : EHEIM Fine Filter Pad (White) for Classic External Filter 2215 (3 Pieces) : Aquarium Filter Accessories : Pet Supplies
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Upgrade filter to Eheim classic 350 external filter. How should I place the spray bar to maintain adequate gas exchange? Above the water line to make a 'waterfall' effect? Or can I
![Eheim Classic canister filters - a guide to setup, maintanence & tips and tricks | Aquarium Filter Forum Eheim Classic canister filters - a guide to setup, maintanence & tips and tricks | Aquarium Filter Forum](https://www.fishlore.com/aquariumfishforum/data/attachments/39/39602-4745fcf385b306d3fc06613e70565241.jpg)
Eheim Classic canister filters - a guide to setup, maintanence & tips and tricks | Aquarium Filter Forum
![Amazon.com : EHEIM Fine Filter Pad (White) for Classic External Filter 2215 (3 Pieces) : Aquarium Filter Accessories : Pet Supplies Amazon.com : EHEIM Fine Filter Pad (White) for Classic External Filter 2215 (3 Pieces) : Aquarium Filter Accessories : Pet Supplies](https://m.media-amazon.com/images/I/91K+jN8CK7L._AC_UF1000,1000_QL80_.jpg)