Instruct: Classify a given review into positive or negative sentiment.
Query: Collection tank design is terrible

Just had the occasion to use this item after purchasing it a while ago to replace our old corded model. Now I can't remove the collection tank. Not only is it designed so the sprayer button interferes with the collection tank button, the button is very difficult to push down, and you're pushing down hard to try to get the button to release, while at the same time trying to lift the tank up! One for the trash heap.