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Picture data of homemade fish tank cylinder filter I just made the number,Give you a design plan to adopt!This is what I do with my fish tank,In the place where the hole is opened, the screw cap water pipe is connected,If a sealing ring is added in the middle, it will not leak,Not counting the total down of the pump less than 50 yuan PVC 110 thick tube 40 with two blocks 15 yuan.The rest of the tube is less than 10 yuan cheaper, and the joint costs 15 yuan enough to buy a 60 W water pump for 47 yuan.Homemade is not recommended.The cost of self-control without long-term hands-on is higher than that of ingredients.