The Planted Tank Forum - View Single Post - Fluval 406 with awful flow...
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Old 01-04-2013, 09:08 PM   #41
jbrady33
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Weird, I have a 406 on a 36 gallon bow, lots of flow, tons of surface movement, tank clears fast. Have trays packed with all the stock media, plus purigen and dish scrubbies. and I have a sponge prefilter!

I did try to use a lily pipe style outlet once, flow/movement dropped way off. Put the stock outlet back and saw immediate return to high flow (with mollies/platies nose into the current playing). Maybe these filters are not so tolerant of changes/additions to the outflow side
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