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Old 11-16-2005, 10:19 AM   #11
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Your welcome. You shouldn't have any issues with it under the water like we all said.

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Old 11-16-2005, 11:16 PM   #12
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I run my 404 below the surface. I even started them up that way. Now I read the manual, and it says "in order to start the water flow, ensure that the output nozzle is above the water surface." Huh. Maybe thats why I had trouble getting it started a year ago. Even the large font, bold face type didn't catch my attention then.

After servicing, I just fire it back up. No problems. The nozzle above water part must be for the first time you prime it.

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Old 11-17-2005, 05:49 AM   #13
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In a tank without CO2 injection, you want as much gas exchange as possible to increase O2 levels. Having the outflow above the waterline will agitate the surface enough to accomplish this. If you're injecting CO2 (as I believe you are), this defeats the purpose as agitation causes CO2 out gassing. I prefer to run mine under the water line.
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Old 11-17-2005, 08:07 AM   #14
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Just FYI, I wont be using CO2...
Planted 35 Gallon Hex Freshwater

Fish - (4) Rosy Tetras, (5) Zebra Danios, (4) Platies, (3) Rainbows, (5) Albino Cories, (2) Ottos

Plants - Micro Swords, (2) Rotala, (2) Camboba

Light - 40w (~1.1 wpg)

CO2 - DIY generator with Hagen diffusor
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Old 11-19-2005, 03:53 AM   #15
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you dont have to have it above the water level to aggitate the surfase.. you can bring up the output to just make the surfase break up some to get gas exchange going.. this has worked for me IME.. of course having the output above the surfase would be more benifical for gas exchange but Ive not needed to do it personaly..

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fluval, tube, val

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