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Do plants prefer NH3, NO2 or NO3?
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RySites
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Joined: 11 May 2003

PostPosted: 2005.04.21(Thu)9:34    Post subject: Do plants prefer NH3, NO2 or NO3? Reply with quote

Basic simple question...do plants uptake ammonia, nitrite or nitrate more readily? I ask this because I've been thinking about making a plant only tank and I'm curious which of these compounds would be best to dose. Thanks in advance.
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benedictj
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Joined: 05 Dec 2004
Location: new york, ny

PostPosted: 2005.04.21(Thu)9:50    Post subject: Reply with quote

Honestly, I'm unsure, but I would personally be really hesitant to dose anything but nitrate simply due to the risks to any fauna in the tank.

(I would assume that plants abosrb ammonia and nitrite more readily though, sheerly based upon them being simpler compounds. Frankly, I'm curious to see how some of the more scientifically educated folks answer this).
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number6
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Joined: 07 Feb 2003
Location: Ontario, Canada

PostPosted: 2005.04.21(Thu)10:00    Post subject: Re: Do plants prefer NH3, NO2 or NO3? Reply with quote

RySites wrote:
Basic simple question...do plants uptake ammonia, nitrite or nitrate more readily? I ask this because I've been thinking about making a plant only tank and I'm curious which of these compounds would be best to dose. Thanks in advance.
Nothing's simple Laughing
Plant's prefer ammonia, but so does algae. Higher order plants can use nitrate, algae cannot use it so readily. Dose nitrates to benefit plants before algae.

Never dose nitrite. Nothing worth mentioning uses nitrite directly.
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