You could also use a hack saw and slice the pipe down the middle for about half it's length so that there is still a part of it resting on the bottom, but there is also a big open area for water to get out of the pipe, closer to the surface.
No big problem in drilling the back to make a RR set up. You just use an elbow on the bottom of the duroso, or use an external duroso.
No big problem in drilling the back to make a RR set up. You just use an elbow on the bottom of the duroso, or use an external duroso.