i've finally got my very first dishwasher (and i'm very excited about it) and now i need to buy tablets. I have absolutely no idea what i need to buy or if i need anything in addition to the tablets. I live in a hard water area and its an ignis dishwasher. If anyone can shed any light i'd be grateful as i need to get them tonight (i'll be the gormless looking one in the detergent isle).