Contact Marineland directly. The LFS is their customer and would be the only one hurt by accepting a direct return. Since it's a product problem, the manufacturer should shoulder the burden IMHO.
Call us at 1-800-322-1266, 7:30 a.m. to 5:30 p.m. Eastern Time.
http://www.marineland.com/sites/Marineland/CustomerService/ContactUs.aspx?id=1814
Call us at 1-800-322-1266, 7:30 a.m. to 5:30 p.m. Eastern Time.
http://www.marineland.com/sites/Marineland/CustomerService/ContactUs.aspx?id=1814