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Sponge Filter In Place Of Airstone

Author Topic: Sponge filter in place of airstone  (Read 816 times)

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Offline Matt

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Sponge filter in place of airstone
« on: December 09, 2016, 06:10:18 AM »
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I have a small airstone in my tank powered by one of those silent nano pumps and was wondering whether if I got small air powered sponge filter which I could put over the end of this and hide it in some plants, I could feasibly increase my filtration in the tank/my stocking? Thoughts welcome  :wave:

Offline ColinB

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Re: Sponge filter in place of airstone
« Reply #1 on: December 09, 2016, 08:03:41 AM »
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Yep - that would grow more bacteria and increase filtration capacity. As for increasing stocking... that depends on space and if you're prepared to up the water changes (if necessary) to cope with the extra Nitrate production etc etc. (But I'm sure you knew that... ;D )

Offline Matt

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Re: Sponge filter in place of airstone
« Reply #2 on: December 09, 2016, 08:18:16 AM »
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Fab, those were my thoughts too... I have a few periods away from home each year of about 2 weeks in length so this is the worst case scenario regarding water changes but fortunately i am blessed with very low nitrates in my tap water (~2mg/l) so I think this should still be doable with a big change before and after  :fishy1:

Offline Sue

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Re: Sponge filter in place of airstone
« Reply #3 on: December 09, 2016, 09:06:10 AM »
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When I got the sponge filter for my betta's tank I went to the shop I trust the most. The chap said to get a sponge filter with a weighted base rather than the kind that stick to the glass with suckers. In your case it won't be the only filter so it isn't as critical, but the chap in the shop said he'd come across several cases where a sucker type had detached itself from the glass, floated and stopped working. If the sponge is only partly underwater it won't suck water through the whole thing.

Offline Matt

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Re: Sponge filter in place of airstone
« Reply #4 on: December 10, 2016, 06:35:52 AM »
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Thanks Sue, great tip as ill struggle to attach to glass where I'm planning to have it (in a rock, wood and java fern structure). I've found one with space for stones/biomedia in the bottom to weigh it down.  It's also a bit smaller which will help when hiding it.

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