Check the listing for details. AquaClear 70 Replacement Sponge Pads 6-Pack Foam Media Inserts for Fish. Condition: New, Made in United States. Listed at 11.98 USD. Perfect Fit: Compatible with AquaClear/Fluval 70 or 40 to 70 gallon power s Keep the Tank Clean: Traps debris and waste particles from the water; provides growing space for beneficial microorganisms to maintain a healthy aquarium environment Quality Material: Withstands repeated rinsing and reuse; ensures stable water flow through its porous structure Maintenance Tips: Replace the sponge pad every 2 to 6 months, adjusting based on your tanks bio load; for optimal water quality, gently clean it in tank water instead of using tap water Includes: 6 pcs of foam s, dimension: 5.5”x 3.6"x 2" (Note: These foam inserts are packaged flat in vacuum-sealed bags. Simply unpack, soak them in water for a while, and they will expand to their full shape and size.)