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Ships within 48 hours · Estimated delivery Sep 12 - Sep 17
with suction cups fasten to inside and outside for secure fit
Easy to apply
See below for link to Adirondack cushions
Every 3 ounces treats approximately 1000 gallons
Brass valves control air flow between each line
Pond Force™ Bio-Blocks Biological Sponge Media Size:1 Cubic Foot (With Mesh Bag) with suction cups fasten toPond Force Bio Blocks polyester sponge blocks provide an ideal environment for the cultivation of beneficial bacteria. With over 500 square feet of surface area per cubic foot of Bio Blocks, bacteria will have plenty of room to grow and thrive. "1 Cubic Foot" quantity comes in 20" x 30" mesh bag "8 Cubic Feet" bulk quantity comes loose in box
