I don't know if i would say its for the Lazy MFK'ers, since in my books, any one willing to lug around buckets of water to empty and fill over 100G - 150G of water each time is pretty hard working compared to people like me who just hook up a hose to empty and re-fill tanks...
The only time the buckets come out is when i'm cleaning substrate and at most i might empty 10 - 15 buckets...