康仔 wrote: deechand wrote: 有關說明書 http://www.aquacare.de/download/anleit/b-adn2.pdf 妖~睇完睇埋佢個網都唔知點解 optimal NO3 concentration 係10-20ppm,搞到心掛掛添
deechand wrote: 有關說明書 http://www.aquacare.de/download/anleit/b-adn2.pdf
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