Advantage of spray bar?
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Old 01-29-2004, 03:47 AM   #1
Derek
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I'm considering putting a little Eheim Aquaball in my 10 gallon tank. I saw where one of you guys attached a spraybar to the output of an Aquaball. Is there a benefit to this in a low-light non-CO2 tank? What if I crank up the lighting and add a DIY CO2 setup later?

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Old 01-29-2004, 01:23 PM   #2
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If you're not injecting CO2, then you aren't worried about surface agitation. As a matter of fact, you want to encourage surface agitation in a non-CO2 tank to keep gaseous exchage consistent. A spraybar could help encourage surface agitation, too, though. Just aim it at the surface and you have an excellent aerator.
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Old 01-29-2004, 04:36 PM   #3
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IMO the main advantage of a spraybar is that it reduces and distributes the flow through your tank. Without it, plants might get blown over close to the filter outlet, and you'd have one area with a lot of movement, and others with less or no movement.
It is also a good way to reduce too much output. Small holes - reduced current. Later, when the tank is full of plants and water movement becomes too restricted, you can drill the holes bigger, adjusting the flow accordingly.
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Old 01-29-2004, 06:04 PM   #4
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I think it's the other way around wasser....smaller holes equals more pressure and faster water movement out of the tube. Larger holes makes for slower moving water coming out of the spraybar.
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Old 01-29-2004, 06:13 PM   #5
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Nope... we are both right. Imagine you have no holes. No flow, right? Now drill some holes the size of needles. Yes, a lot of pressure, but still almost no flow. See where I am going?

If you have a really really week pump, further increasing the hole size reduces the pressure so much that the overall water movement could be reduced. Or say you have a really big diameter spray bar, and a whole lot of big holes. Less pressure.

I think we both have a point
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Old 01-29-2004, 06:26 PM   #6
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You are both right, when you remember that the amount of flow (ie gallons per hour) is finite, so that there is an inflection point where you won't get anymore flow making the holes bigger, you just make the force of the flow less.
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Old 01-29-2004, 09:32 PM   #7
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What size Aquaball Derek?

The spraybar attachment will not fit the 2206.

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Old 01-29-2004, 10:47 PM   #8
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Well, I was thinking about the 2206 but I think I could hide the 2208 behind the big piece of driftwood in my tank...

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Old 01-30-2004, 12:04 AM   #9
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I will double check that for you later on Derek.

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Old 01-30-2004, 02:11 AM   #10
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Pretty sure the spraybar kit doesn't fit the 2206.

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Old 01-30-2004, 02:21 PM   #11
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Thanks for the leg work Mike. Think I'll stop by Big Al's after work today and tinker a little with the Aquaballs. We have a lot of tubing and such here at work (engineering lab) so I could probably hook a spray bar up to just about anything.
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