EcoBio-Block Family Products for aquarium use have a 120-day satisfaction guarantee. Properly established, EcoBio-Block should give you years of worry-free maintenance.
For more information, please contact us as below:
ONEdersave Products LLC
P.O. Box 335, Edmeston, NY 13335-0335
Toll Free: 888-797-7252
Office Hours: Mon-Fri, 9am-5pm (Eastern Time)
Your comments and suggestions are welcome!