Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Stay away from the low-end coralife products

For the same money you can get a better unit with a TDS meter in it. My unit will not let the membrane seat properly so I can't get the water qualitity that I am suppose to. The hose connections are cheap and the plastic seat connector is quickly wearing out. I see ribbons of plastic come off everytime I disconnect it from the sink.