I updated the overflow drain on the larger bog filter tank. I’m still using electrical conduit elbow, but it’s 1½”, not 1″. The outlet pipe is also resized for an 1½” tee-less connector. I enlarged the hole in the piece of perforated drain which keeps the roots from plugging the conduit.
I’ve been finding more uses for inner tube. This plumbing change includes a piece of bicycle inner tube for connecting the two pieces of pipe together.
The only thing I wish I’d done before assembly was to paint the conduit black, but once the water hyacinth is added to the tank the leaves will hide the gray.