I wanted the original Perky-Pet boxes with six pre-measured pouches (5.5 oz. each) of powdered nectar.  Perky-Pet discontinued the six pouch box (2 pounds total) and now offer the bulk two pound bag.  The six count pouches sometimes leaked.  I measure 6 oz. of powdered nectar for my 30oz. feeder and the hummingbirds love it.  I mix with hot water to dissolve all the sugar and red color crystals allowing it to cool down before mounting.  After an hour, there are no particulates and you get clear red nectar.  Good luck.