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Old 08-05-2009, 07:57 PM   #1
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HOB Power Filter Questions

To those that have experience using HOB power filters as a means of providing additional mechanical / chemical filtration ... a few questions:

• How often do you replace your filter cartridge?

• Do you rinse / dry them periodically using tap water or RO/DI water?

• I have a mesh bag of carbon inside the power filter along with the filter cartridge, what other chemical filtration materials do you use?

• I have been cleaning the entire filter (body, input tube) every weekend by rinsing and drying to minimize any build-up. Is this schedule overkill?

Thanks for any input!
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Old 08-05-2009, 08:18 PM   #2
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If you are running a HOB on a SW tank, I would run it with just LR rubble. What other filtration do you have? LR? Skimmer? A total cleaning is probably overkill, but the cartridges and other media can become Nitrate issues so I'm not sure which is worse to be honest.
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Old 08-05-2009, 08:21 PM   #3
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i change mine every three weeks. it told me to do it monthly, but i didnt want it ti become a "nitrate factory" as HN1 put it.
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Old 08-05-2009, 08:22 PM   #4
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I agree with HN1, fill it with rubble.
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Old 08-05-2009, 08:25 PM   #5
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just asking, why rubble? i had it in mine, but i never really understood why i had it in there.
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Old 08-05-2009, 08:36 PM   #6
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LR provides a media for beneficial bacteria. The bacteria do far more to maintain healthy water than any filter cartridges, sponges, bio balls, etc. ever can. By having rubble, the surface area is maximized.
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Old 08-05-2009, 08:39 PM   #7
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oh i new it held a lot, but i never came up with that.

and anyways, why would you use that over carbon? dont they hold the same?
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Old 08-05-2009, 08:42 PM   #8
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Quote:
Originally Posted by HN1 View Post
If you are running a HOB on a SW tank, I would run it with just LR rubble. What other filtration do you have? LR? Skimmer? A total cleaning is probably overkill, but the cartridges and other media can become Nitrate issues so I'm not sure which is worse to be honest.
As far as other filtration ... 25-lbs of live rock in the DT. No protein skimmer and still contemplating whether to get a skimmer or not.

I have been replacing the filter cartridge every 2 weeks when I do a 15% PWC and every week I have been rinsing the cartridge to clean away accumulated detruis. Sometimes I rinse the cartridge with the old water from the PWC and other weeks I have run it under the facet and rinsed with tap water. I dry it before putting it back in the filter.

I also have a mesh bag inside the power filter with about a cup of activated carbon. I change out about half the carbon every other week with new stuff when I do a PWC.

So far my Nitrates have not got beyond 10ppm between PWC's but then again my bio-load is somewhat light with 3 fish.

Appreciate the replies!
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Old 08-05-2009, 08:44 PM   #9
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only three fish?!?! how big is the tank?
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Old 08-05-2009, 08:50 PM   #10
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Quote:
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only three fish?!?! how big is the tank?
37-gallon. It's also only 5-weeks old though.
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