I had to let this one go outside for a tinkle today. It pumps a good amount of water now. Just about right I would say.
http://youtu.be/Acb7J5H3EuE
This is one pass up and back.
And this is a single pass going as slow as I can.
A couple pictures of it all pumped out. It ran through about 6L of water in around 5 minutes.