DIY my aquarium with filtration under gravel for crystal water

DIY my aquarium with filtration under gravel for crystal water
  Evan Liang
170   117K  

DIY a filtration under gravel with PVC tube. First buy 4 straight tube from Home Depot, cut and conjoin them as a draft what I designed. Let PVC tube lie on the tank, and put biochemical ceramic rings around tubes, then cover with biochemical filter spong

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Diy  Crystal  


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