I know a lot of people do not know this but some do..You can always buy fish supplies cheaper at Petsmart..The way you can do it is if you go to the Petsmart internet website, the items are always listed as cheaper there compared to the retail price at stores..All you have to do is bring the internet printout (check out) of the items to the cashier and the manager will approve it for you..I know sometimes you dont save much but sometimes you do such as buying a python water changer for a lot cheaper...I never knew this until someone told me..