回覆: i work in aquarium company, suggestion products?
stanlyyau 我不丑,也不笨
文章: 28 來自: 遥远的国度,临近的天空,熟悉的语言
于 2004-10-22 04:43 how about ORP? i am planing to DIY a calcium reactor,but seem like quite hard...... and NO3 reducer will be DIY too after i collect enaugh of info from here...thanks