I have a 1.3 acre pond in my pasture. The overflow pipe has about a 10" pipe for the water to frain thru. The old grate that was over the pipe to keep sticks and other debree out is gone. I have been unable to fing where to get a replacement cover. I once asaw some made out of rebar but I can not remember where that was. Would you know where I could look to find this?