Filtration Overkill?

G

gpaaib

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Jan 15, 2008
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I'm curious about something as I wait for the FX5 my wife ordered to arrive.

From what I have read it recycles water at over 900 gallons per hour. Using it on a 90g tank, technically it would recycle water 10 time over every hour.

Is that overkill? Is there such a thing as too much filtering or is more better?

Thanks,

Gary
 
I've never worked with a 90g tank....10g has always been my limit. But I can tell you that the majority of the filters for 10g tanks filter 120+g per hour (12x + per hour). So 10 is not that bad.
 
for HOB filters, the general rule is 10x filtration, so you are perfect. Its impossible to "over-filter". The only thing that you have to be weary of is the amount of flow that the filter generates. Generally the more powerful the filter, the stronger the flow and some fish prefer calmer waters. But in your case, you don't have to worry because you are at teh recommended 10x.
 
tas46 said:
I've never worked with a 90g tank....10g has always been my limit. But I can tell you that the majority of the filters for 10g tanks filter 120+g per hour (12x + per hour). So 10 is not that bad.
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Most filters for a 10g are HOBs which require a lot more flow to get the same filtration quality of a Canister Filter, which is what an FX5 is.

As for the OP...you'll prolly have quite a bit of current in your tank (compared to most) but I don't think you're going to have that big of a problem...the concern isn't over filtration as it is with current for your fish...some fish can't handle current as well as others.

Myself, I'm designing a tank that will have at least 20x turnover rate in current, all going in one direction, to simulate a river tank...and I'm handpicking species which should be able to handle the stronger current.
 
LesbianChap said:
Most filters for a 10g are HOBs which require a lot more flow to get the same filtration quality of a Canister Filter, which is what an FX5 is.

As for the OP...you'll prolly have quite a bit of current in your tank (compared to most) but I don't think you're going to have that big of a problem...the concern isn't over filtration as it is with current for your fish...some fish can't handle current as well as others.

Myself, I'm designing a tank that will have at least 20x turnover rate in current, all going in one direction, to simulate a river tank...and I'm handpicking species which should be able to handle the stronger current.
Click to expand...

ah, i didnt realize that the x5 was a cannister. Yea it might be a little much on the flow side, but you never have to worry about "over filtration"
 
I have a 90 and I have 2 cascade 1000's on it.

I think you will find that the out put will leave dead spots in your tank.IMHO

I am of the school that 2 smaller filters is better than 1 Large.

there are also other factor like is your tank planted, type of fish, are you injecting co2 etc.
 
gpaaib

IMHO there is "no such thing as filtration overkill" but only filtration to the point of "lunacy (which I am probably near)"

From the literature (as I have limited experience with one) I believe that 10X with a canister filter is inappropriate

BUT

as Mgamer20o0 and Draal5 noted the rated value of a cannister filter IMHO is not the actual value when installed for your tank and you have week old media in the cannister.

My best guess based on my limited experience with a "nice Eheim" is that you will be getting 7X on a "long term average".

TR
 
your fine
 
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