I recently made a new spraybar using 1/2" O.D. PVC for my 2213 Eheim. It was very easy, though not pretty. I think I spent, maybe, $5 or so at Home Depot for an incredibly long tube that had to be cut in 1/2 to fit in my car, an end cap and a 90 degree top piece. I just cut 8" off the tube, drilled 9 holes in a diamond design with a hole in the middle at the height I wanted the flow from. I didn't use any glue, just stuck the pieces together. The Eheim's tubing fits snugly into the PVC's 90 degree oriface. The tube also fit into the Eheim's original suction holder. My goal was for the current from the cannister to efficiently blow the Co2 bubbles out into the tank. I located it in the middle of one side of the tank. It works great.