did you do anything to feed the bacteria? live bacteria kept alive is always better than bottled bacteria. there's has always been a question in my mind whether bottle bacteria is truly effective.
as for fishes, depends on budget. i've always leaned towards a rightly nice designer pair of clownfishes for a nano tank. then a goby, blenny, dottyback or firefish. i lean towards the orchid dottyback myself (magenta color).