[問題] 流沙床用過濾器???
請問有人用過 流沙床過濾器嗎??
在網路上看到這個 http://goods.ruten.com.tw/item/show?11081122969348
這種過濾器是取代 圓筒內的培菌濾材來處裡嗎??
看起來只要ㄧ個外製馬達 + 培菌沙就可以達到很好的效果
有人用過嗎? 這在板上好像不多見
原本的想法是 這東西是不是類似底抽的概念 把底抽的距離拉長~~
這樣的話 應該用三胞胎自己改或許也很省事~
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