亚硝酸盐和礁岩水族(转帖)

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表6

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总结：


就目前已有的研究结果来看，亚硝酸盐对与海水鱼的毒性不像对淡水鱼的那样大。这个差异非常大，最敏感的那些淡水鱼要比一般海水鱼要敏感1000倍以上。这个结果是否适用于所有的水族海水鱼？我没办法确知。我只看到一种在海水水族里常饲养的鱼类的亚硝酸盐毒性测试结果（图2）。不过，我们没有充分理由认为它们更敏感或更不敏感。

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图 3. 和大多数水族鱼类一样，我缸里的牛角 (Lactoria cornuta) 对亚硝酸盐的毒性耐受力没有测试过。

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海水无脊椎动物也是同样情况。已有的研究很少。已有的研究表明，亚硝酸盐的致死剂量非常大（几十到几千ppm）。在较低的浓度下，可以观察到一些生化和发育的影响。然而，没有任何理由可以认为最敏感的无脊椎动物已经被测试过了。

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爱好者显然可以根据上述的数据自行决定，什么亚硝酸盐水平是可以接受的，或者说，达到什么浓度，就需要采取措施来降低它（例如换水）。幸运的是，水族箱中的亚硝酸盐水平通常都远低于会导致中毒的水平。新缸的亚硝酸盐水平可以达到10ppm或更高，这种情况不适合饲养敏感的生物。一旦亚硝酸盐低于了1ppm，就没有理由再有什么可以担心的了。

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依我之见，建缸初期亚硝酸盐和氮循环可能是一个可观察的有趣现象，但是亚硝酸盐没有必要定期测试。尽管多年来我建立了许多新缸，但我从来没有测试过亚硝酸盐。我认为，亚硝酸盐不像氨，磷酸盐，碱度，PH，钙等等那样，值的花时间和金钱去测试。我的观点是，亚硝酸盐浓度以外的很多东西更值得爱好者们去关注。

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养鱼快乐!







如果你对本文有任何疑问，请访问reef central上我的作者论坛 。

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参考文献:


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4. Nitrite and nitrate distribution in the surface water of oligotrophic areas of the East China Sea and Philippine Sea off Taiwan. Wada, Eitaro. Ocean Res. Inst., Univ. Tokyo, Tokyo, Japan. Marine Science Communications (1977), 3(3), 279-86.

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