Bought one of these in spite of very mixed reviews on Amazon. I decided to go for it based on the praise it gets here. Must say, I wish I hadn't. I had a HUGE mess to clean up. The fittings are made of such cheap, soft plastic that they strip by looking at them cross-eyed. The compression fittings do not hold against household water pressure (I have low pressure compared to most). If you get one of these, use two people, one to hold the end in the tank, one to turn on the water at the tap. Using the valve at the tank end caused the whole thing to blow apart. The compression fitting was as tight as it would go, since I had read about others having problems with it. The fitting at the sink, barely holds on to a brand new Moen fixture. Not a cheap one. There are very few threads with the particular adapter needed. Even when it was up and working, it had so little suction from a bottom tank on a two tank stand, that it wouldn't suck much at all out of the gravel. VERY disappointed. Back to buckets for emptying, a hose from a proper faucet hook-up for filling. MUCH easier in the long-run. Not to mention CHEAPER. Anyone want to buy a Water Changer cheap - only used once!