catchment cover

[seekir]

I've made and used a PVC pipe "X" (with perpendicular legs) using 1" pipe and a four-way fitting at the center. I put "T" fittings at the end of the legs for feet where the pipe meets the tank rim. I'd cut across the top of the T so that there would be a "C" shape channel or mouth in the T which would act as a grip on the rim of the tank at the ends of the legs. I cut the X so that the legs would be a bit longer than the tank diameter so that I could string and tension monofilament from the ends of the T feet parallel to the pipe to bow the PVC legs up so that the cover would be held proud of the water on the bowed X-shape frame. One advantage (other than cost) of this scheme is that PVC won't rust like the metal commercial frames.