The Planted Tank Forum - View Single Post - Fluval 406 with awful flow...
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post #48 of (permalink) Old 01-05-2013, 06:15 PM Thread Starter
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Originally Posted by diamondd7711 View Post
I have a 406 as well and I was having flow problems, to the point there was almost none. I completely took the filter apart and cleaned as you have, still low flow. Then I found a similar post and discovered that the impellers on the fluval are very sensitive to wear. The blades on mine were just very slightly rounded on the corners. Replaced impeller, works great again.
How long had you owned the filter for this to happen?
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