These are the aquascape designs bio falls filters pads that are used to replace the pads in the bio falls filter. Your biofalls filter can handle up to five pads. Consider adding more pads to your bio falls filter to increase your pond filtration. Grande bio falls filter pad size is 41" x 27" x 56" ponddepot@msn.com Copyright - All World Rights Reserved Pond pumps, Pond Kits and Pondless Waterfall kits, Underwater Pond Lights. Aquaclearer Extreme bacteria and String Algae Buster and pond fish food. Pond Depot provides Do-it-yourself pond kits and Pondless waterfall kits delivered right to your home at great prices! Thank you for shopping at Pond Depot you online pond superstore!