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pH lowering
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Arturo
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Joined: 13 Jan 2009
Location: Wisconsin

PostPosted: 2010.01.14(Thu)17:44    Post subject: pH lowering Reply with quote

Hi everyone!

I just want to know different methods of lowering pH. I know about driftwoods and tannin(?) acids. Would carbon remove the acids? What other products lower pH? If carbon removes the acids, what other filter material could I use?

Thanks
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Darkblade48
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Joined: 21 Jun 2004
Location: Yokohama, Japan

PostPosted: 2010.01.14(Thu)19:14    Post subject: Reply with quote

Driftwoods will leech tannins which will cause discolouration as well as lowering the pH.

Activated charcoal would remove the tannins.

Peat moss and Indian Almond Leaves will slightly lower the pH. Carbon dioxide will also lower the pH.

As for carbon, there really is no need to use it, unless you are specifically trying to remove something from the water.
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katienaha
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Joined: 18 Dec 2009
Location: British Columbia, Canada

PostPosted: 2010.01.14(Thu)23:54    Post subject: Reply with quote

sorry to steal your thunder, but since it's kind of related - other than esthetic purposes, is there any need to remove tannins from the water? Are any fish out there harmed by tannins? My tank is getting stained from my driftwood, but I kind of like it Smile
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Maestro
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Joined: 25 Oct 2008
Location: United States

PostPosted: 2010.01.15(Fri)13:58    Post subject: Reply with quote

Nope, the tannins cause no problems as far as what I have seen.
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monstrosity
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Joined: 16 Oct 2009
Location: Tennessee, USA

PostPosted: 2010.01.15(Fri)23:13    Post subject: Reply with quote

People use the tannins to create tank themes, such as Amazon acid pool themes.

Arturo, carbon is also used for plants, not just to get stuff out of the water. I reccomend using co2 to lower your tank's pH, because it's great for plants, too.

Another method used to lower pH is adding peat moss to the filter. Just put it in a filter media bag or pantyhoes, and put it in the filter.
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Darkblade48
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Joined: 21 Jun 2004
Location: Yokohama, Japan

PostPosted: 2010.01.16(Sat)0:05    Post subject: Reply with quote

monstrosity wrote:
Arturo, carbon is also used for plants, not just to get stuff out of the water.

I believe in this case, Arturo was talking about activated charcoal (carbon), not the carbon (molecule) that is part of carbon dioxide.
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Anthony
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Arturo
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Joined: 13 Jan 2009
Location: Wisconsin

PostPosted: 2010.01.16(Sat)23:28    Post subject: Reply with quote

That's exactly what I was talking about Darkblade48
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snausage
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Joined: 09 Feb 2010

PostPosted: 2010.02.09(Tue)10:26    Post subject: Reply with quote

If you aren't squeamish about adding chemicals, I've had great success with API's pH down.
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Darkblade48
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Joined: 21 Jun 2004
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PostPosted: 2010.02.09(Tue)16:31    Post subject: Reply with quote

snausage wrote:
If you aren't squeamish about adding chemicals, I've had great success with API's pH down.

This is definitely not the way to go about lowering pH. Playing with water chemistry by adding phosphate buffers is never a good idea.

More often than not, aspiring hobbyists kill many fish by having the pH fluctuate up and down due to the addition of such chemicals.
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snausage
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Joined: 09 Feb 2010

PostPosted: 2010.02.10(Wed)0:08    Post subject: Reply with quote

Another option is adding peat moss filter media. Fluval manufactures it, but you'll have to purchase one of those special nylon media bags (like 7 bucks for a name brand).
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