康仔
養仙魚,養仙魚
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文章: 3576 來自: 港島東區
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于 2003-11-03 12:12 ![把文章內容复制到剪貼板。
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PP-HK, Sorry I have been sick these few days and have not read you post earlier. The explanation for the conversion of NO3 to NO2 by the bacteria is as explained by deechand. Also, from my own experience with no sulphur-eating bacteria present, some NO3 with still be converted to NO2 (I guess there may be some chemical reaction involved ). So enough contact time should be allowed for the bacteria to completely convert the NO3 from the tank water as well as these NO2 to N2(i.e. eat the 3 "O"s from the NO3 and 2 "O"s from these converted NO2). As deechand also explained, the in-circulation will provide extra time for the bacteria to eat the "O"s of both NO2 and NO3, because there is reduce water intake from the tank due to the in-circulation, the NO2 and NO3 concentration of the re-circulated water will gradually decrease and eventually becompletely converted to N2
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