Sometimes a small job can be made so much worse, Last week a pond clean out that should have taken the two guys about three hours stretched into an day project. This was accomplished because the builder of the pond didn't get the correct information on how or why to add gravel in the bottom. I feel that almost any pond can be more beautiful with the addition of gravel, however some ponds are not built in a way that can accommodate gravel. Some ponds are too steep, or thin shelved or deep , but the most common problem I see with gravel is that it is just too deep. The pond last week had over 9 inches of gravel along with sand, and dirt. This made a pretty solid base of muck and mire. The removal was a big job. This could have been avoided if the landscaper who installed the pond would have carried off the extra gravel and sand ( He probably didn't see any harm in raising the bottom ) .....Well when the guys finished it looked great !