At Optima...
Are you sure isn't there something missing in your Hoover Performa's detergent drawer? My parents' old Zerowatt (Candy) had the same kind of thing, the compartment for the conditioner and the 1 for the bleach share the same section but there are two extra little compartments underneath which keep these 2 separate... so, unless you've taken the drawer apart, you might be deceived into thinking that they share the same container. On this machine the bleach compartment gets flushed out on the 1st rinse on cotton cycles only, on synthetic cycles this compartment can be used if 1 wishes to put extra fabric conditioner as it gets flushed out on the softner rinse together with its next door compartment.
I got ACE once... haven't bothered with it much... um... it's still in the cupboard... I wonder... do these things ever expire? B.t.w. you're suppose to put it in the wash cycle according to the instructions on the bottle... which is just as well... my Hoover doesn't have a 4th compartment :-O