55 gallon blue poly barrel DIY radial flow filter combined with media/bio filtration for aquaponics. This version receives water from the pump in the sump of a CHOP2 system. You can easily modify the design for a gravity feed input from the fish tank simply by changing the size of the inlet pipe and using 2 x 45s in place of the 90 degree elbow. I will use coarse lava rock as the biofilter medium...be sure to size the plastic mesh for your filter medium. #55_gal #aquaponics #barrel #biofilter #DIY #filter #poly #radial #radial_flow
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