The PowerFlo PT555 is the correct insert replacement for the following:
The PowerFlo 1000 Replacement Foam is constructed with coarse, porous material that is great for performing a degree of biological and mechanical filtration. This foam replacement, also known as part number PT555, fits the PowerFlo 1000 External Pond Filter. You will find this replacement is also referred as the Laguna Foam Insert.
PowerFlo 1000 Foam Filter Specifications:
The design of this foam pad is stylish and innovative. Coupled with other biological filter media inside the filter, your pond inhabitants will have a clean, clear and healthy pond environment.