Aquarium Filter / Media Reactor v2

cults3d

DIY Aquarium Filter/Media Reactor/Bioreactor 3D-printable, watertight without caulking, minimal assembly, disassembles for cleaning PARTS: 6 ABS (or PLA) 3D-printed pieces 1 3" clear polycarbonate tube 4 M3 x 20mm socket-head screws 4 M3 nuts 1 3" soft rubber o-ring 6-12" of 0.5" ABS tube 0.5" soft silicone tubing snap-grip nylon hose clamps SUPPLIES: acrylic cement to bond ABS and polycarbonate parts clear epoxy to bond PLA and polycarbonate parts applicator syringe ASSEMBLY SUGGESTIONS: ABS Pipe: cut top of pipe so 1cm extends past upper flange cut bottom of pipe for 5mm gap between pipe and lower flange bevel cut pipe ends if flared bond bottom screen to ABS drop tube at desired height using acrylic cement Cleanup: de-bur inner hole where ABS drop pipe enters hose barb remove stray filaments from overhang de-bur and lightly sand top bevel inside upper flange Tube-Body Assembly: fill syringe with acrylic cement apply small amount of acrylic cement in base and upper flange channels twist flanges onto polycarbonate tube for even coat of cement align upper and lower flanges Hardware: press in magnets with drop of CA glue press in M3 nuts Pre- and Post-Reactor Mechanical Filters: cut 20mm thick by 3-inch wide discs of filter material to fill upper and lower filter baskets cut x-shaped hole in middle of each filter to pass 0.5" inch drop tube push lower filter into place with rod Sealing: stretch o-ring onto convex circumference of centralizer screen use couple drops of CA glue between o-ring and centralizer insert and tighten M2 screws until just snug, or until upper flange begins to bend at corners. This will compress o-ring between two plates. Troubleshooting: if you have leaks where polycarbonate tube meets a flange, apply small bead of cement at seam with syringe if you have leaks at top seal, check that seal is clean and that drop tube isn't too long to allow seal to compress