I have 2" uniseals to use, so I got 2" pvc, cut a 3" hole in plastic 5 gallon buckets, although i did make them to close to bottom with only 1/2" from bottom, so that may be an issue, but I can only get 1 pvc in so far, makes it worse that I put 2 holes in bucket 180 degrees from the other, so it is hard to get good pressure on pipe. I cut the pvc with a slight angle, I couldnt cut it at 45 because my saw wont cut all the way through then. I got burs off pipe and bucket. Seams the bucket caves in bad on side away from bottom of bucket, shit just wont go through, I am almost ready to give up and get new buckets and through dirt in them.