Half thumb up. The siphon component is good and the hose that it comes with, I have a 50' hose, is top notch and quite flexible when it needs to be. I don't use the water filler component, I have to pay for water and I have a septic system which doesn't like a lot of extra water so I don't use the waterbed venturi water vacuum attachment. I fill the tank from our taps using a flexible garden hose connected to a utility sink, and a plastic garden sprayer instead. I drain the largest tank first with the siphon, then start it filling while I start draining the next tank.