Any Suggestions On What I Can Use To Seperate My Pond Into 2

[rick newton]

I have a pond that is 3000gl it has to large 10 ft circles at eacg end that are about 3 ft deep then a 3 ft wide channel that runs between the 2. I think it would be best to put a block in the channel but need a suggestion on what to use....please

Rick

 

[england]

A few things, get a load of plants and fill up a corner with plants, failing that what about them bamboo fences you can buy at garden centre's