I have a test kit from about 5 or 6 years ago. Are the solutions any good or should I just replace them to be safe. I just got back into fishkeeping and thought I could use my test kit that I have. I don't see any expiration dates on the bottles. The box has been stored in the basement on a shelf. I have one of these http://www.apifishcare.com/Products/Product.aspx?ProductID=67. Thanks for the help.