deechand
蘭花及食蟲植物之友請
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于 2003-09-20 00:30 ![把文章內容复制到剪貼板。
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你唔明? Did you read here ? "Sulphur nitrate filter grade 1" http://www.ratz-aquarientechnik.com/Katalog/Katalogauswahl.asp?Param1=E0859622&Page=4 兩日就會生效? NO! It is a part of tuning because It is a slow start filter, require tuning the flow rate and NO3 keep ~0 until the flow rate reach the max. flow rate, but heterotrophic denitricator can not do that. For heterotrophic Bio-denitrification, it require organic compound like alcohol, organic acids, sugar to feed the bacteria and it will pollute water and also, it is easy to block the outlet by organic compound. But For Autotrophic Bio-denitrification, it is fed by in-organic compound and filter substrate like sulphur , CO2 and their by-product.
deechand 修改于 2003-09-20 00:39
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