[問題] 生化棉的清洗與替換
搜尋很多資料，感覺莫衷一是
在我有用白棉+生化棉x2+陶瓷環，並讓水流有正確順序的情況下
大致上有這樣的想法：
兩週換水一次時用舊水洗一下生化棉再放回去
每半年換一塊，隔半年再換另一塊，反覆操作
想請問這樣有沒有什麼問題？
亦或不必那麼費事？
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