Nope. You may get away with the DIY pvc itself, but the pump is the biggest part of a skimmer. I can steer you in a good direction of makin a good DIY skimmer pump, but its gonna be like $50. I figured out how to make a Reef Octopus pump knock off.
740 GPH Submersible Water Pump Powerhead Pond Aquarium Fountain Reef Coral CSA | eBay
You'll need a pump about like this one. Drill a hole just for the 1/4" air line, right above center. You don't want it dead center or you'll mess up the impellar shaft. Stick in the air line. Take the impellar out, and you'll need a dremel using a small cutting disk. You'll cut notches in the impellar blades, so it looks like a Needle Wheel Impellar. You'll cut 3 notches in each blade. Or you can try this DIY.
Needle Wheel DIY.jpg