i was just at Petco today & saw they have a great sale on their aquatics. you may have to check your own Petco to see if they have their own separate sale on items, but this is what i saw at mine:
- 30% off when you buy 3 or more aquatic plants (live or plastic)
- on SELECTED fish... 5/$5. (male/female guppies were included in this deal) i've been contemplating on whether or not i should breed guppies & i was so tempted to buy some today.
EDIT: also 10% off on aquarium heaters