Instruct: Classify Amazon reviews into positive or negative sentiment
Query: You need a tub to fill this thing

Tall tank cannot be filled in any normal sink, and curved top of tank prevents setting it down while filling in the tub. Therefore, you have to lean over or get down on your knees and hold it while you fill it. I dropped the tank and it broke in the tub. No replacement parts available (the manufacturer refused to sell it), so this thing is now a piece of junk. Too bad about the poorly designed tank - everything else was fine for the 24 hour period during which it actually worked for me. I won't be buying another one.