very cool setup!!! unfortunately I don't think my parents would be very happy if I decided to drill a hole into a) the basement or b) the wall, but this method sure beats having to collect water from each and every saucer/pan under each pot... I will try your method of collecting all the water, but in my case I'll probably just let it collect somewhere and then periodically carry the water outside to the garden.
Of course that works. IF you're capable of lifting the bucket or making trip after trip with a small bucket, which kind of defeats the purpose of "quick and easy" water movement.
I personally can't lift a five gallon bucket and transport it anywhere. For $20-$40 bucks, depending on GPH, you can move a lot of water without straining the back or the budget.