Eric,

The landscaping fabric was a heavy weave grey material. I already had some in my garage and it seemed to work very well. I purchased it from Home Depot a few years ago. The egg crate or light diffuser also came from Home Depot. You can find it near the building material side of the store. To cut it I just used a side cutter and clipped it flush with the surface where I could. You will see what I mean after you get some. As for holding the egg crate together I used zip ties. One thing I should of done was wrap the pump in the fabric to help keep the junk out of the filter. Right now I just kill the power to the pump and let it back flush using the water in the tube to clear out any junk it might have on the intake screen.