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Old 12-29-2004, 11:33 PM   #1
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Eheim 2213 flow control

I have just received an Eheim Classic 2213 cannister and have installed it on a 23 gal tank. This is my first cannister filter. I would like to reduce the flow through the spray bar which I have installed vertically. Can I close the valve on one of the quick-disconnects to a point where the flow is restricted and more satisfactory? Should it be the valve on the inflow? The outflow? Could this damage the pump motor or the impeller?
Thanks for the help.
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Old 12-29-2004, 11:44 PM   #2
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Welcome to Aquarium Advice, yeldarb!!

Instead of closing a valve and restrict flow in the canister unit itself, I'd consider widening the holes in the spray bar first.

If you take a round file, or a drill, and enlarge the holes it will reduce the flow enough to solve your problem, hopefully. You could also swap out the spray bar for a powerhead outflow but I think the spray bar with widened holes will spread out the flow adequately. I'd try to avoid putting any strain on the flow by means of a valve, as I think you will hamper the function of this most excellent filter.
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Old 12-30-2004, 01:16 AM   #3
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I would agree with TG.When you turn down the flow of a powered filter you are putting a degree of strain on the motor.You won't neccessarily damage it in a short period of time but may shorten its normal life.Widening the holes on the spray bar is an excellent alternative.
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Old 01-02-2005, 03:49 AM   #4
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I'm having the same problem with my new filter. I'm told that the flow will slow down a bit over time. I suppose it makes a difference how messy the tank is and how long this takes. I don't want to drill anything until i know i have to.
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Old 01-02-2005, 01:58 PM   #5
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What kind of filter do you have, Nystina?
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Old 01-02-2005, 04:15 PM   #6
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I just bought a Rena XP3, rated at 350gals/hr. for my 50gal. My last filter was a HOB and was rated at 400gals/hr. but didnt produce nearly as much current. My fish cannot even swim unless i restrict the flow quite a bit and angle the flow horizontal instead of 45 deg. downward. My background plants are now middleground
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Old 01-03-2005, 11:20 PM   #7
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I have an XP3 on my 55, and I know what you're talking about!

There are various positions in the tank that help this issue, mainly aiming the spray bar straight across the tank, rather than pointed down, or, if your tank is deep enough, placing the spray bar on the short end of the tank, so the current flows the length of the tank instead of the width, and spreads the current out over a longer distance. I found that when the filter was new I did keep the flow adjusted back with the valve, but now I leave it full force, except at feeding time.
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Old 01-08-2005, 04:34 PM   #8
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Thanks for the help.

I now have the spraybar horizontal across the the top rear of the tank, directed at the back glass, but pointed slightly downward. The current that is there seems to flow down the back of the tank to the bottom and appears fairly gentle. The surface is quite still. (Maybe too still?) In order to have my DIY CO2 function best, the surface needs minimal agitation.

There is a bit of a film on the surface that I will somehow have to deal with.
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Old 01-11-2005, 09:43 PM   #9
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DIY CO2 will often produce a film, but you can install a gas separator if you want to deal with it.

http://www.qsl.net/w2wdx/aquaria/diyco2.html#4

Scroll down for the schematic on the system.
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Old 01-12-2005, 01:36 AM   #10
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Thanks. Good thought, so I checked my CO2 line and it appears very free of any yeast residue. I have been running DIY CO2 for over a year now and have never seen this before. (I had seen that website before and thought that separator was a bubble counter! )

Would running a new filter do this?

I thought it might be some kind of bacterial scum which would clear itself after a short time. I have altered the filter spraybar to create more surface turbulence. Time will tell.

Oh... also, I noticed that the inside of both the inlet and outlet hoses both black AND white round dots covering them. Lots of them. This is after about 15 days of operating time. They they must have been bacteria or mold. Is this normal? I have now cleaned them.
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