| You can use flagstone for the edge of the pond and it comes in a varity of colors. As for the water fall I used granite and changing out the flagstone to black slate. I wouldn't recomend black slate for the edging since it can be very sharp. Also my friend outlined his pond with riverrock but the problem he has is the food ends up in between the rock where the fish can't get to it. So he had to lower the water level a bit to help with the problem. |