Emperor 280 flow rate too high?
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Old 08-09-2014, 03:52 PM   #1
Altapura
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Emperor 280 flow rate too high?


I have recently revived on old Oceanic 30 gal cube as a planted tank using an Emperor 280 filter. This filter has a little flow adjuster lever on it. Although I'm sure that filtration is way better when on full blast, the fish seem like they have to fight the current of the outflow and some of my smaller fish end up just sort of avoiding that side of the tank. If I adjust the flow to say 50% or less, they seem way more comfortable but is the filter still effective and is this safe for the fish long term?
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Old 08-09-2014, 11:59 PM   #2
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It'll still be effective, just not as strong. Are you using just the one filter cartridge? Do you keep the water level near the top of the tank? That alone should make the flow less turbulent.
What fish do you have? The 280 is normally a good size filter for a 30 gallon.
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Old 08-10-2014, 11:02 AM   #3
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I have platies and guppies so far. I do keep the tank filled appropriately, but it just seems like the fish struggle on that side of the tank. At the moment, the tank is pretty bare save for some driftwood and a few ludwigia stems. Maybe with more plants, the current will be diffused a bit.

I have been using the one filter cartridge and also the media holder thing.

On a related note, would it be any better if I shortened the intake? Currently, it goes almost all the way down to the gravel.
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Old 08-11-2014, 10:48 PM   #4
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I like to put my filter intakes about 3 inches above the substrate, but that's not going to effect the rate of outflow.
The filter will work fine at the restricted setting. Guppies and Mollies aren't the most efficient swimmers but I would expect them to handle the flow of an Emperor 280 . Are these full grown?
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Old 08-12-2014, 06:54 PM   #5
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If your guppies are fancy tailed then they appreciate a lower flow. The mollies like to play in currents. Your filter will be effective regardless of your setting. You can cut flow down with plants, wood, & rocks and aquascape your tank at the same time. Your fish will find dead spots to rest in and play in the current when they want to.
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Old 08-27-2014, 10:51 AM   #6
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Seems like the fish are finally used to the filter. I've turned it down to 50% flow which seemed to help a lot.


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