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post #1 of 12 Old 04-07-2013, 05:08 PM Thread Starter
Question Sponge filter cycle

Since I've come back to the hobby things have changed so much I'm a newbie. So I'm asking what may be a stupid question. I have a sponge filter (Hydro II) that will go into my 10 g QT in my cycled (5 months old) 29 g community tank to cycle the filter, after reading the QT sticky I think the sponge filter should be running with air. Right?
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post #2 of 12 Old 04-07-2013, 06:22 PM
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spong filters usually run with air or powerheads, either or works but PH obviously gives you more flow
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post #3 of 12 Old 04-07-2013, 07:45 PM
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Yes, either or, most use air as the flow is gentler which most fish prefer.

Sponge filters still work great, even today. Don't buy into the hype that you need these monstrous HOBs. Of course, live plants are always better :)
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post #4 of 12 Old 04-07-2013, 08:30 PM
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Quote:
Originally Posted by Geomancer View Post
Yes, either or, most use air as the flow is gentler which most fish prefer.

Sponge filters still work great, even today. Don't buy into the hype that you need these monstrous HOBs. Of course, live plants are always better :)

+1 ^^
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post #5 of 12 Old 04-07-2013, 09:10 PM
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Originally Posted by Geomancer View Post
Yes, either or, most use air as the flow is gentler which most fish prefer.

Sponge filters still work great, even today. Don't buy into the hype that you need these monstrous HOBs. Of course, live plants are always better :)
Live plants + Sponge filter = awesome
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post #6 of 12 Old 04-07-2013, 10:26 PM
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What would be the maximum tank size to use sponge filters ??
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post #7 of 12 Old 04-07-2013, 10:30 PM
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I *think* I've read 40 gallons? Anything larger and I'd rather use a canister. I currently have a HOB on my 75 gallon. I'm ditching that annoying piece of crap for a canister.

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post #8 of 12 Old 04-07-2013, 10:36 PM
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post #9 of 12 Old 04-08-2013, 04:31 AM
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I'd say you could get away with a sponge in any size but I would recc a power head to drive them and have atleast two in a planted tank they are more for mech filtration than bio
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post #10 of 12 Old 04-08-2013, 06:36 AM
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Yes, they can work in any size tank, but as you get larger you would need more than one and it would cause some odd flow patterns for the water and lots of noise.

With a canister you can get even water flow in a left to right direction (or right to left) to simulate a slow moving river. They are also far quieter, and for that reason alone I'd use a canister on anything 40g or higher. I really, really, do not like the noise air pumps make!

As a side note with live plants, there is the argument that will never be settled on if in a natural setup (no CO2 injection) that surface disturbance will affect the scarce levels of CO2 available for the plants. But lots of people use them (myself included) on small tanks with no ill effects so /shrug
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