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Thread: Fluval 406 Troubleshooting

  1. #1
    BlazeitChris's Avatar
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    Fluval 406 Troubleshooting

    Hello fellow Houstonians,

    Iíve got a predicament with my canister filter (Fluval 406) and was wondering if I could get some advice. So Iíve had this filter for about 6 years, replaced the motor head (top part) about 3 years ago. The problem Iím having is the output flow seems to be restricted but I canít figure out whatís causing it. So far Iíve tried replacing the top o-ring to rule out an air leak, rinsed the media sponges and media baskets, and checked the intake for any kind of blockages; all yielding no success. At this point Iíd guess that the motor is starting to go out but Iíd like to be sure before spending the cash on a new one. Any advice would be greatly appreciated!

  2. #2
    supadave's Avatar
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    Did you check the impeller?

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    BlazeitChris's Avatar
    So, those are scales.
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    Quote Originally Posted by supadave View Post
    Did you check the impeller?
    Yeah there's nothing stopping it up or anything. I don't know what else to check for with the impeller.

  4. #4
    MasterHuang's Avatar
    Stop staring at my caudal fin.
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    Happened to mine, turned out I donít have the top cover on the media tray, the pump sucking up my media and blocking some flows. So I let the top layer tray empty and it works perfect now.

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