Jack's Magic Filter Fiber Stuff - Replaces D.E. (9oz.) YBlocklist many algaecides require the pH

many algaecides require the pH to be balanced in order to work properly

Compliant with all safety codes

and Butterfly Gasket Set (2 Pcs

inhibitors to provide maximum resistance to damaging ultraviolet rays

5" Female threads

Jack's Magic Filter Fiber Stuff - Replaces D.E. (9oz.) YBlocklist many algaecides require the pHJack's Magic Filter Fiber Stuff filter media is a safe, non toxic alternative to DE. The Filter Fiber Stuff is super concentrated, requiring less than half the amount required of DE (by weight) to deliver swimming pool water of the highest quality. The Filter Fiber Stuff significantly extends filter life providing great value. The Filter Fiber Stuff is completely biodegradable and non toxic, making backwashing safe for the environment and easy for the