[Mike Mazur]

# inch to curved plastic equation... fire up the litlle propane torch and warm the palstic. Apply bulkhead quickly to the warmed not melted hole, too hot it will warp out of round faster than ya can say oh shat. you may find nylon mesh too fine after filter matures and meterial is sluffing of the outside. through the lid w pipe is ok but makes service tough and no venturi will draw in enough air. The venturi will also cut drastically the throughput of the system. I push my sequence 6000gph pump through my setup. it is an open system whereas the echanical stage feeds through via gravity and then to the bio chamber. good luck keeping off posters for slot machines.