AAP water driven Hydro-Pond 3
• Sponge Size; 4.5" H x 5.25" W
• Excellent for Aquariums under 100 gallons, especially in sump or bulkhead fitting applications or as a high flow pre-filter
• For ponds up to 750 gallons as secondary filter or 125 gallons as the primary filter.
• Surface area= 138 square inches
• For BEST Results we recommend covering the Sponge Material with Volcanic Rock or similar to screen our larger debris (as shown in the picture in the setup instructions).