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Title: Low output with an in-line heater or CO2 Diffuser
Review: There is no reason to buy this filter over the 2213EHEIM Classic 250 External Canister Filter ? 2213. The 2213 is roughly the same size, it has full 13mm input/output unlike this filter which is only 9mm on the output. Also the 2213 has a canister inside which makes removing/changing media so much easier. Pricewise they are about the same and it is absolutely worth it since the larger output makes a huge difference in the flow. I use in-line accessories like a heater and an inline diffuser which slow down the flow of water so the added mm is a huge plus.
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