External Filter with Anoxic Filter
thingiverse
Custom design external filter with multi basket of anaerobic bacteria and big basket for Anoxic reaction to convert NO3 to N2. Use OASE 500 Aquarium water pump. Fiber Filter is place between Water Pump to inlet pipe connector and Fiber Filter Stopper Insert to prevent Fiber Filter from come loose. Can use Bio Rings L shape filter box to replace the stopper to have more bio rings. Need to design you own intake tube. To prevent the Main box from leaking, you need to paint some " MAX CLR" clear liquid resin.
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