I'm sortof in the same situation as you, only w/o the wife. Do you have a T on the outside of the tank? I can't tell from your picture. I'm soon to do this, as I've heard it helps, but install a ball valve (I'm goign to spend the extra bucks and get a gate valve) at the bottom of the plumbing right before the sump. Close it partially to keep the tube about 3/4 full of water so the water doesn't form a waterfall on the way down.
Just what I've heard, project is goign to be started in about 2 weeks.