DeWitt Pond Underliner (4oz Thickness)
DeWitt Pond Underliner (4oz Thickness)
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DeWitt Pond Underliner is a durable, clean, and safe material to install under ponds instead of using cardboard, newspapers, sand or old carpet padding. Helps protect the inner wall from punctures from stones and cushion the pond wall for fish, while allowing gases to escape to maintain the proper biological balance for all pond life. 
  • Constructed of nonwoven needle punched fabrics in various weights
  • Easy to use, and installs in minutes