Safe yourself some problems and probably some cash. Stop going to stores like that. Theres some good stores in Edmonton that are mentioned on this site often and are sponsors. Blue World Aquatic and Red Coral Aquarium. Never been to either but also have'nt seen any bad comments about them. Also try to get your hands on this book. It's a good one.
http://www.jlaquatics.com/product/li...dcover%29.html