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Old 06-13-2014, 12:28 AM   #11
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I had similar flow issues with an AC20 and an AC30. Both had the Fluval Edge sponges over the intakes. Removing the sponges solved the flow issues. I also serviced the impellers at the same time, but I noticed that my sponges were hourglass shaped at the end. They clogged up in about 6 weeks to the point of seriously reducing the filter flow. I'm glad to hear the tip about boiling them to clean them out. I'll try that when i replace the sponges, the intakes are running naked at the moment.

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Old 06-19-2014, 02:00 AM   #12
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Yup. the little Edge pre filters can clog seriously, and just the little rinse out in old bucket water wont work.

My 12G Edge tank was at trickle, so I rinsed and it seemed fine, then I gave it a solid squeeze and it was brownish and it continued for minutes of rinsing in the tub faucet, I couldn't believe how much crap came out and kept coming out.

Every 2 weeks I rinse it, but never blast it with water straight out of the tap, but wow did it ever need a big cleaning. Water was blasting out of there after it was put back on!!!

Today I bought a few new prefilter sponges on clearance at Petco. And the weird chimney brush looking thing as well for the tubes.


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Old 06-19-2014, 02:38 AM   #13
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You can get a 3 pack of those Edge prefilters on Amazon practically for free. I figure when it's too far gone that it won't rinse clean anymore, why go through the effort? Just pop a new one on.

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